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11 Gross Things Can Happen if you Don't Wash Your Hands

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11 Gross Things Can Happen if you Don't Wash Your Hands

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Even though it isn't guaranteed to cause health problems, there are quite a few gross things that can happen when you don't wash your hands. Because, as we all know, germs are everywhere. And it often doesn't take much to pick them up throughout the day, or pass them along to others.

Thankfully, the immune system usually steps in before bacteria and viruses can do any real damage. But if you aren't washing your hands regularly, you may be unnecessarily putting yourself at risk. After all, "the number one way to prevent disease is hand washing," Dr. Elizabeth Trattner, tells Bustle. So even though it can be easy to put it off, it's much healthier to pop off to the bathroom and give your mitts a quick scrub, especially after coming in contact with dirty surfaces or if you happen to be sick.

"The best hand washing technique is to rinse hands under warm water, then lather with soap for 20 to 30 seconds, getting all areas of the hands," Brianne Bell, registered dietician and food service supervisor, tells Bustle. "Rinse under warm water and dry with a clean towel." That should help reduce the risk of all the gross things below, which may be more likely to happen if you don't wash your hands.

1. You Might Catch More Colds

According to the Centers for Disease Control and Prevention (CDC), about 80 percent of infectious disease is spread by touch. And really, all it takes is the simple act of grabbing a germ-riddled doorknob and then touching your nose, in order to get infected. So let this serve as motivation to whip out the soap on a more regular basis, not only for your own sake, but for everyone else's health as well.

Of course, that doesn't mean you need to become paranoid. Most of the time your body protect you from germs, especially if your immune system is strong. But even still, washing up whenever you've been around someone with a cold is always a good idea.

2. Fecal Matter Can End Up In Your Food

It's a gross truth, but fecal matter is lurking in more places than you might think - including your hands. And rather disgustingly, those particles can get into food and make you sick, according to the CDC.

It may not be something you want to imagine. But as long as you're washing your hands after using the bathroom, changing a diaper, walking your dog, or even using public transportation, you should be able to lower your risk.

3. You Could Get Or Spread Food Poisoning

There are many ways to come down with a case of food poisoning, including eating undercooked meats, or food that has gone bad. You can also get pretty darn sick by preparing meals with dirty hands. (See above information about fecal matter).

According to the CDC, a large percentage of food-borne disease outbreaks are spread by contaminated hands. But appropriate hand washing practices can reduce the risk of food-borne illness and other infections. So do yourself, and everyone else, a huge favor by washing before you handle food.

4. You're Infecting Everyone You Touch

Sure, it's polite to cover your sneeze with your hand than it is to let if fly. And yet, how often do you really wash up after doing so? It's easy to forget, or to touch a few surfaces first - and just like that the germs spread.

Again, hand washing is the best way to prevent the transfer of disease, which is why "this is one of the first things you learn in medical school or in any health profession," Dr. Trattner says.

In a pinch, using hand sanitizer can cut back on the transfer of germs, Bell says. But nothing beats a good ol' scrub when it comes to reducing the amount of bacteria and viruses on your hands.

5. You Can Get Pink Eye

Pink eye, also known as conjunctivitis, is an eye infection many people catch in elementary school, mostly because it's highly contagious and thus spreads like wildfire among kids. But adults can get it, too.

In fact, often all it takes is a quick moment of hand-to-eye contact when you have an infected person's secretions on your hand, according to the American Academy of Ophthalmology, before the typical symptoms of redness, itchiness, and pus in the eyes will begin.

6. Your Snacks Can Get Contaminated

Think of all the times you've plunged a dirty hand into a bag of chips, box of crackers, or bowl of popcorn. If you aren't washing your hands, it's so easy to contaminate these shared foods with germs, according to the New York State Department of Health.

This is also why you may not want to share food or utensils with someone who is sick, especially if they have the norovirus. According to the CDC, if you get the norovirus illness, you can shed billions of norovirus particles that you can't see without a microscope, and it only takes a few of these particles to make people sick.

7. You Might Pick Up Hepatitis A

Not washing your hands can also lead to hepatitis A. "This is a serious liver virus that spreads when people do not wash their hands before making food and drinks," Dr. Tania Elliott, board-certified allergist/immunologist at NYU Langone Health, tells Bustle. "It also spreads through sexual contact with people who have hepatitis A, and by eating foods contaminated with the virus."

You can, however, make it less likely to happen. As Dr. Elliott says, "Washing your hands with soap and warm water after using the bathroom, changing a diaper, or before making food and drinks can help stop the spread of hepatitis A."

8. Diarrhea May Become A Frequent Visitor

Not washing your hands regularly can increase your chances of catching an illness that leads to diarrhea. One of these might be shigellosis, a bacterial infection with symptoms that include watery diarrhea, abdominal cramps, and fever, according to the CDC.

There is good news, though, in that simply washing your hands - especially after coming in contact with germ-y surfaces - can prevent about 30 percent of diarrhea-related sicknesses, the CDC says.

9. You Might Catch The Epstein-Barr Virus

We talked about poop in your food. Now what about urine, or saliva? Turns out, these are carriers of diseases like typhoid, cytomegalovirus, and Epstein-Barr virus, which are spread by contaminated hands, according to the CDC.

Epstein-Barr is the virus that causes mononucleosis, AKA the "kissing disease," which can lead to fever, weakness, swollen neck glands, and fatigue that lasts for weeks. "This is spread through saliva, so kissing, sharing food or beverages, or touching something with saliva on it are all ways in which it can be transmitted," Dr. Elliott says. "Hand washing, especially after touching the face and mouth [...] can help prevent the spread."

10. It Could Contribute To Antibiotic Resistance

According to the CDC, reducing the number of infections people get by washing your hands can help prevent the overuse of antibiotics, which is the single most important factor leading to antibiotic resistance around the world.

"Antibiotics are often overused when someone has a viral infection (remember, antibiotics only fight bacterial infections, not viruses)," Dr. Elliott says. "So, the fewer viral infections (by proper hand washing and other sanitary measures), the less use of unnecessary antibiotics."

In fact, hand washing can also prevent people from getting sick with germs that are already resistant to antibiotics and that can be difficult to treat, according to the CDC. So help out everyone on the planet, and wash your those hands!

11. Acne Can Crop Up

Not washing your hands can also increase the chances of an acne breakout, all thanks to the way bacteria can transfer from your hands to your face.

"Touching, rubbing, and picking [at the] face are common causes for more acne," Dr. Yoram Harth, board-certified dermatologist and medical director of MDacne, tells Bustle. "When the hands are not washed, the bacteria on the skin of our hands spread to the face and can cause more acne."

Germs truly are lurking around every corner. And they can obviously cause and spread all sorts of diseases, from the common cold, to the norovirus, and even hepatitis A. But by getting into the habit of washing your hands regularly - especially before touching food - you may be able to enjoy a more germ-free life.
This post was originally published on 4/12/2016. It was updated on 6/7/2019.

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11 Gross Things That Can Happen When You Don't Wash Your Hands Enough

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Even though it isn't guaranteed to cause health problems, there are quite a few gross things that can happen when you don't wash your hands. Because, as we all know, germs are everywhere. And it often doesn't take much to pick them up throughout the...

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Bacteria and other microbes can make us sick. But there's a lurking danger with some germs that's far more frightening than a bout of food poisoning or an infected wound. Today, drugs exist to fight most of these germs. They're called antibiotics. Before these medicines came along, common infections frequently killed people. And that's where the danger lies: What will happen if antibiotics no longer kill germs?

Already some antibiotics have lost their superpowers. Many others are beginning to lose theirs. Biologists describe this problem as resistance. Across the globe, germs are becoming resistant to antibiotic medicines. In a sense, these "superbugs" have begun to laugh at those former wonder drugs.

But resistance is no laughing matter. As germs toughen up against drugs that are supposed to slay them, treatable conditions such as TB - tuberculosis - can spread. And surgeries that rely on antibiotics could turn from life-saving to life-threatening.

The threat is huge

"Alarming levels" of drug-resistant bacteria already exist in many parts of the world. That's the conclusion of a 257-page report published in April. It was issued by the World Health Organization (WHO).

This United Nations agency, based in Geneva, Switzerland, recently reviewed how well these germ slayers perform in 114 countries. In some places, it found, antibiotics no longer work for half of all people being treated against common diseases. Those diseases include pneumonia and gonorrhea.

The Centers for Disease Control and Prevention (CDC), based in Atlanta, Ga., also has been investigating the problem . It estimates that in the United States alone, antibiotic-resistant infections now sicken some two million people each year. At least 23,000 of them die.

But even antibiotic-resistant germs that don't kill can be a problem. Their infections become harder to treat - and more expensive. Consider one estimate - $233 million - published May 20 in the journal Antimicrobial Resistance and Infection Control. That's how much researchers calculated that it costs the United States each year to deal with just one resistant superbug. That germ causes a lung disease known as pneumonia.

Drug-immune bugs that flourish in the human gut can enter the environment with every flush of the toilet. Researchers discovered how big this problem is when they analyzed wastewater from 11 sites in one French city. Antibiotic-resistant bacteria tainted 96 percent of their samples. A May 1 paper in Clinical Infectious Diseases describes the disturbing details.

Some scientists have scouted for such germs in the environment. They collected superbugs at hospitals. Then they probed the germs, identifying parts of their genes that appear to make them resistant to antibiotics. Next, the researchers looked in the outdoor environment for that same genetic fingerprint of superbugs. And they turned up that superbug DNA in 71 places - from the soil and sea water to human wastes. The researchers reported their findings May 8 in Current Biology.

Why it's happening

Drug designers have created antibiotics to kill bacteria, as well as some fungi and other germs. But sometimes, a few treated germs survive. They survive because they're stronger. Or they may have certain genetic mutations that allow them to break down the drug. They might even have evolved a way to keep the drugs from harming their operational machinery. Over time, all germs susceptible to a drug will die off. That will leave behind only superbugs - those microbes that medicines can't kill.

This is not surprising. In fact, it's quite natural. Part of evolution, it's known as survival of the fittest.

Scientists stumbled onto the first antibiotic, penicillin, around 1930. Since then, research has produced a medicine cabinet full of additional ones. It appeared that these would make many of the worst bacterial infections ever more manageable. So, during the 1970s, drug developers began focusing on noninfectious health problems, such as cancer and heart disease. As a result, in the past 30 years, no new types of antibiotics have been developed.

Right now, bacteria are outsmarting antibiotics faster than developers can make new ones. And there are no signs things will change, says Stewart Cole. He directs the Global Health Institute at the Ecole Polytechnique Fédérale de Lausanne in Switzerland.

Writing in the May 12 Philosophical Transactions of the Royal Society B, he argues that the "golden age" of antibiotic development "is a distant memory, and the likelihood of there being another seems slim." This lack of new types of germ killers, he says, has been allowing superbugs to morph and thrive.

One of the most famous of them is known as MRSA (pronounced MER-sah). The letters stand for methicillin-resistant Staphylococcus aureus . Methicillin is a widely used antibiotic. And Staph aureus is a germ that can cause boils, food poisoning, toxic-shock syndrome and more. These bacteria sicken (and sometimes kill) by releasing potent natural poisons - called toxins - into the body.

Despite its name, MRSA is resistant to far more antibiotics than just methicillin. That makes this superbug particularly nasty in hospitals and prisons. These are places where people often have open wounds or weak immune systems. Both increase a person's chance of picking up an infection.

Too much of a good thing

Drug resistance can develop at any time. But its likelihood climbs as the use of an antibiotic increases. And this is especially true when an antibiotic is overused. That's when a doctor prescribes it for infections it has no hope of curing.

For instance, doctors sometimes prescribe antibiotics to treat an infection before they learn if the disease is caused by bacteria. If viruses are responsible, then antibiotics will be useless. The reason: Antibiotic medicines do not kill viruses. Yet by giving an antibiotic to someone with a viral infection, that drug will reach good bacteria living in our bodies. And over time, some of these bacteria will become resistant to the drug.

Last year, the CDC reported that up to half of the antibiotics that U.S. doctors prescribed went to people who didn't actually need them.

Take, for example, someone who visits a doctor for a lingering cough. Viral infections cause most coughs. So a viral cough won't be helped by drugs and will tend to go away on its own. Yet 71 percent of the time, doctors will still prescribe antibiotics for patients coming in with a common cough, a May 21 study finds.

"I think there's this perception among both doctors and patients that coughs don't go away without antibiotic treatment," Jeffrey Linder told Science News for Students . Linder, who coauthored the new report, is a doctor at Brigham & Women's Hospital in Boston, Mass. He and Michael Barnett, also from the hospital, tracked the drugs that doctors prescribed during more than 3,000 U.S. clinic visits between 1996 and 2010. They reported their findings in the Journal of the American Medical Association .

A small number of people who visit a doctor with a cough turn out to have bacterial pneumonia. These cases do require antibiotic treatment. But Linder says doctors should easily be able to recognize these few from the hordes of people coming in with a routine, viral cough.

Perilous profit

Antibiotic overuse also has become a problem on farms. In the United States, animals - not people - receive about 80 percent of all antibiotics. Sometimes the drugs are used to save an infected animal or prevent disease from spreading through a herd. More often, though, feed suppliers put small amounts of these drugs into the food that will be given to healthy animals. These antibiotics help speed the animals' growth. And this has boosted farmers' profits.

But using antibiotics just to beef up livestock is "a direct threat to human health," argues Kellogg Schwab. He's an environmental microbiologist at Johns Hopkins University in Baltimore, Md. Earlier, he and his coworkers detected bacteria that are resistant to antibiotics in the exhaust air blowing out of farm buildings. That suggests these superbugs can spread through the air from animals to people.

SteveOehlenschlager / iStockphoto

Germs that are immune to antibiotics also can hitch a ride into your body through ground beef or the chicken breast on your cutting board. Biologists have found that much of the fresh beef, pork and poultry sold in grocery stores contains bacteria resistant to antibiotics.

Even if those germs don't sicken us or cause other immediate harm, they can offload their resistance genes into other bacteria that normally live inside our bodies. Sometimes, like with the MRSA superbug, resistance is carried on circular pieces of DNA called plasmids. These plasmids can slip easily from one bacterial cell into another.

In this way, our gut microbes can become "a reservoir of resistance," says Sharon Peacock. She's a microbiologist at the University of Cambridge in England. Later, "when we actually get sick and need an antibiotic, we may already carry a resistance gene" that may keep that drug from working, she says.

In the United States, farmers have fought against banning antibiotics as growth promoters. They say it will reduce their profits because more animals will get sick, slowing their growth. But that's not been the experience in other countries.

The U.S. Food and Drug Administration, or FDA, has proposed banning antibiotic use in healthy animals. But for more than 30 years, the livestock industry and Congress have fought such action. Recently, the FDA stepped up its efforts to end this practice.

In December 2013, FDA laid out a plan to phase out within three years the use of antibiotics on farms to boost livestock growth. Its stated reason: concern that farm use of these drugs has made more germs immune to the antibiotics needed to fight life-threatening infections in people. And that's a worry because the same germs that sicken animals often sicken people.

Antibiotic resistance is a complex and growing problem. Many microbiologists worry that the time when antibacterial medicines no longer work could be coming. Thankfully, doctors and many patients are becoming more aware of the problem. Researchers also are hard at work creating new tools to keep superbugs from taking over.
Next: How scientists are trying to tackle the problem
Power Words

antibiotic A germ-killing substance prescribed as a medicine (or sometimes as a feed additive to promote the growth of livestock). It does not work against viruses.

bacterium (plural bacteria) A single-celled organism forming one of the three domains of life. These dwell nearly everywhere on Earth, from the bottom of the sea to inside animals.

boils (in medicine) A skin infection that starts as a hard, red, painful lump. Eventually, it gets bigger, softens and fills with pus. A common source of these is a bacterium known as Staphylococcus aureus.

bioengineer A researcher who applies technology for the beneficial manipulation of living things. Bioengineers use the principles of biology and the techniques of engineering to design organisms or products that can mimic, replace or augment the chemical or physical processes present in existing organisms. This field includes researchers who genetically modify organisms, including microbes. It also includes researchers who design medical devices such as artificial hearts and artificial limbs.

Centers for Disease Control and Prevention, or CDC An agency of the U.S. Department of Health and Human Services, CDC is charged with protecting public health and safety by working to control and prevent disease, injury and disabilities. It does this by investigating disease outbreaks, tracking exposures by Americans to infections and toxic chemicals, and regularly surveying diet and other habits among a representative cross-section of all Americans.

cholera A bacterial disease that infects the small intestine, causing sever diarrhea, vomiting and dehydration. It is spread by germs from feces that contaminate water or food.

DNA (short for deoxyribonucleic acid) A long, spiral-shaped molecule inside most living cells that carries genetic instructions. In all living things, from plants and animals to microbes, these instructions tell cells which molecules to make.

evolution A process by which species undergo changes over time, usually through genetic variation and natural selection, that leave a new type of organism better suited for its environment than the earlier type. The newer type is not necessarily more "advanced," just better adapted to the conditions in which it developed.

fungus (plural: fungi) Any of a group of unicellular or multicellular, spore-producing organisms that feed on organic matter, both living and decaying. Molds, yeast and mushrooms are all types of fungi.

gene A segment of DNA that codes, or holds instructions, for producing a protein. Offspring inherit genes from their parents. Genes influence how an organism looks and behaves.

germ Any one-celled microorganism, such as a bacterium, fungal species or virus particle. Some germs cause disease. Others can promote the health of higher-order organisms, including birds and mammals. The health effects of most germs, however, remain unknown.

gonorrhea A serious disease that can infect the genitals, rectum and throat. This sexually transmitted disease is very common, especially among people between the ages of 15 and 24. Untreated, it can cause infertility or death. "Untreated gonorrhea may also increase your chances of getting or giving HIV - the virus that causes AIDS," according to the U.S. Centers for Disease Control and Prevention.

growth promoter (in livestock agriculture) A medicine, usually an antibiotic, added in small doses to the feed given to animals raised for meat. Used as a preventive medicine, it can reduce the risk that animals will become sick, which would slow their growth. And that would decrease a farmer's profits.

immune system The collection of cells and their responses that help the body fight off infection.

infection A disease that can be transmitted between organisms.

influenza (or flu) A highly contagious viral infection of the respiratory passages causing fever and severe aching. It often occurs as an epidemic.

livestock Animals raised for meat or dairy products, including cattle, sheep, goats, pigs, chickens and geese.

microbe Short formicroorganism. A living thing that is too small to see with the unaided eye, including bacteria, some fungi and many other organisms such as amoebas. Most consist of a single cell.

microbiology The study of microorganisms, principally bacteria, fungi and viruses. Scientists who study microbes and the infections they can cause or ways that they can interact with their environment are known as microbiologists.

mutation Some change that occurs to a gene in an organism's DNA. Some mutations occur naturally. Others can be triggered by outside factors, such as pollution, radiation, medicines or something in the diet. A gene with this change is referred to as a mutant.

plasmid A small circular loop of DNA that is separate from the main chromosomal DNA of bacteria.

pneumonia A lung disease in which infection by a virus or bacterium causes inflammation and tissue damage. Sometimes the lungs fill with fluid or mucus. Symptoms include fever, chills, cough and trouble breathing.

resistance (as in drug resistance) The reduction in the effectiveness of a drug to cure a disease, usually a microbial infection. (as in disease resistance) The ability of an organism to fight off disease.

superbug A popular term for a disease-causing germ that can withstand medicines.

toxic shock syndrome A rare and potentially deadly bacterial infection caused by Staphylococcus aureus. This bacterium release toxins - natural poisons - into the body of its host. Symptoms include a sudden high fever, muscle aches, vomiting, diarrhea, a rash and sometimes seizures.

toxin A poison produced by living organisms, such as germs, bees, spiders, poison ivy and snakes.

tuberculosis A bacterial disease that causes unusual growths in the lungs or other tissues. Untreated, it can kill. The infection usually spreads when a sick individual coughs (or talks, sings or sneezes), spewing germs into the air.

virus Tiny infectious particles consisting of RNA or DNA surrounded by protein. Viruses can reproduce only by injecting their genetic material into the cells of living creatures. Although scientists frequently refer to viruses as live or dead, in fact no virus is truly alive. It doesn't eat like animals do, or make its own food the way plants do. It must hijack the cellular machinery of a living cell in order to survive.

World Health Organization An agency of the United Nations, established in 1948, to promote health and to control communicable diseases. It is based in Geneva, Switzerland. The United Nations relies on the WHO for providing international leadership on global health matters. This organization also helps shape the research agenda for health issues and sets standards for pollutants and other things that could pose a risk to health. WHO also regularly reviews data to set policies for maintaining health and a healthy environment.

Citations

E. Landhuis. " The war on superbugs." Science News for Students. July 16, 2014.

B. Harder. " Joining the Resistance: Drug-immune microbes waft over hogs." Science News. Jan. 1, 2005.

A.L. Mascarelli. " Infectious animals." Science News for Students. April 17, 2013.

J. Raloff. " Antibiotics afield." Science News. Nov. 26, 2005.

J. Raloff. " Growth-promoting antibiotics: On the way out?" Science News. March 23, 2012.

J. Raloff. " Retail meats host drug-resistant bacteria." Science News. Oct. 20, 2001.

N. Seppa. " Danes keeping drugs out of livestock." Science News. April 8, 2003.

Original Journal Source: M. Barnett and J. Linder. Antibiotic prescribing for adults with acute bronchitis in the United States, 1996-2010. Journal of the American Medical Association (JAMA). Published May 21, 2014. doi: 10.1001/jama.2013.286141.

Original Journal Source: J. Nesme et al. Large-scale metagenomic-based study of antibiotic resistance in the environment. Current Biology. Published May 8, 2014. doi: 10.1016/j.cub.2014.03.036.

Original Journal Source: S. Peacock. Health care: Bring microbial sequencing to hospitals. Nature. Published May 29, 2014. doi:10.1038/509557a.

Original Journal Source: B. Spellberg, J. Bartlett and D. Gilbert. The future of antibiotics and resistance. New England Journal of Medicine. Published Jan. 24, 2013. doi: 10.1056/NEJMp1215093.

Original Journal Source: S. Cole. Who will develop new antibacterial agents? Philosophical Transactions of the Royal Society B. Published May 12, 2014. doi: 10.1098/rstb.2013.0430.

Original Journal Source: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention. Antibiotic-resistant threats in the United States, 2013.

Original Report Source: World Health Organization. Antimicrobial resistance global report on surveillance, 2014.

Teachers' questions: Superbugs: A silent health emergency

Esther Landhuis is a freelance journalist in the San Francisco Bay Area. She worked on her high school newspaper and spent a decade studying biology before discovering a career that combines writing and science.

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Have antibiotics become too popular? Overusing these medicines fuels resistant germs that pose a global health threat.

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Titanic, the so-called "unsinkable ship," struck an iceberg on April 15, 1912, and sunk to the bottom of the ocean, claiming the lives of more than 1,500 of the 2,220 people onboard.
The ship's designers, paid well by the White Star Line, went out of their way to tell the world that the construction was safe and sound for the voyage across the northern Atlantic Ocean, from Southampton, England, to New York. The designers were so convinced of the infallibility of their design that they included only 20 lifeboats, enough for one-third of the people onboard to vacate the ship if necessary.

On April 10, the giant ship left port. After four days, the unthinkable happened and the unsinkable ship sank, having struck a large iceberg that ripped large enough holes in the lower decks to split the ship in half.

The collision occurred 375 miles south of Newfoundland and caused several of the ship's watertight compartments to open, allowing water to rush in and trapping many people on the lower decks.

Only 18 of the 20 lifeboats were launched, and none of them were filled to capacity. Some had only 20 or 30 people onboard, and the population of lifeboats was top-heavy in terms of class, with many more first-class passengers than anyone else. (This eyewitness account from a survivor says that only 36 people were in her lifeboat.)

In many ways, the Titanic passenger list reflected the wide class divide of the times. Of the 1,296 total passengers onboard the massive ocean liner, 319 were labeled as first class, 269 were termed second class, and 699 were called third class, or steerage.

A closer look at the casualty figures reveals that of the 319 first-class passengers, 200 survived and of the 269 second-class passengers, 117 survived. Only 172 of 699 third-class passengers survived. A similar percentage can be found among crew and staff: 215 of 918 survived.

This happened for a few reasons, most notably that the first-class passengers were, by and large, the first ones into the lifeboats. Of the 20 lifeboats onboard, 18 were set afloat. All but three of the lifeboats had a capacity of 65 (the others could carry 40), but very few lifeboats began their journeys away from the sinking ship with 65 people aboard.

First-class passengers only were allowed on the first several lifeboats. Second-class passengers were on the eighth lifeboat to launch, and third-class passengers were not on a lifeboat until the 12th one to go.

Another contributing factor to the death of so many third-class passengers was the public health law that required the locking of gates that separate these lower-deck passengers from the "higher" classes.
More in-depth statistics
The Titanic had struck the iceberg at 11.40 p.m. on the night of April 14. About 2:20 a.m. the next morning, the boat broke apart and sank, bow-first, with more than 1,000 people still onboard. The water was freezing, and hundreds of people died quickly from hypothermia.

Survivors were eventually rescued by crew aboard another large ship, the Carpathia.

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The Titanic, the so-called 'unsinkable ship,' struck an iceberg on April 15, 1912, and sunk to the bottom of the ocean, claiming the lives of more than 1,500 of the 2,220 people onboard.

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Sinking the Titanic: Women and Children FIrst Myth

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Sinking the Titanic: Women and Children FIrst Myth

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"We found a lower survival rate for women on British ships than on ships of other nations"

Forget "women and children first" - it might have worked on the Titanic, but it's usually every man for himself, says Mikael Elinder
Where does the notion arise that, when a ship sinks, women and children come first?
It appears to have started when the HMS Birkenhead ran aground off South Africa in 1852, but the notion became widespread after the sinking of the Titanic in 1912. The captain explicitly issued an order for women and children to be saved first. As a result, the survival rate for women was three times higher than for men.

This idea of chivalry at sea has gained mythological status, but you're the first person to examine if it's true for many other maritime disasters. What did you find?
We went through a list of over 100 major maritime disasters spanning three centuries to see if we could find data on survival rates of men and women. We ended up with data on 18 shipwrecks, involving 15,000 passengers. In contrast to the Titanic, we found that the survival rate for men is basically double that for women. We only have data on children for a limited number of shipwrecks, but it is evident that they have really bad survival prospects&colon; just 15 per cent.

What about the noble ideal that the captain and crew put the passengers first and go down with the ship?
What we can see clearly is that the crew were more likely to survive than passengers, with 61 per cent surviving, compared to around 37 per cent of male passengers. On average, the captain was more likely to survive than the passengers.

So this notion of chivalry at sea is a myth?
Yes. It really is every man for himself.

Why do you think we bought into the "women and children first" belief?
The Titanic has been so extensively studied and it confirmed the myth. There was little empirical evidence against it. Lucy Delap of Cambridge University argues that this myth was spread by the British elite to prevent women obtaining suffrage. They said, look at the Titanic, there is no reason to give women the vote because men, even when facing death, will put the interests of women first.

In fact, you've found that, in general, women fare worse on British ships?
Yes, It has been claimed that "women and children first" is just a British phenomenon. But we found a lower survival rate for women on British ships than on ships of other nations.

You are an economist. Why are you interested in shipwreck survival?
Other investigations of the Titanic disaster found that even when incentives to pursue your own interests were really high - that you may die if you don't - people can cooperate and act at the expense of their own survival. This is in contrast to models that economists have of human behaviour, that people are self-interested and act to maximise their own well-being. We wanted to test these models in extreme situations by analysing a completely new set of shipwrecks. We found that most shipwrecks are the complete opposite to what happened on the Titanic.

Profile

Mikael Elinder is an economist at Uppsala University, Sweden. His paper "Gender, social norms, and survival rates" is in PNAS this week

Topics:

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Sinking the Titanic 'women and children first' myth

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Forget "women and children first" - it might have worked on the Titanic, but it's usually every man for himself, says Mikael Elinder

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Titanic facts for kids | History | National Geographic Kids

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Learn about the most famous ship in history with our twenty Titanic facts. How big was the Titanic? Where did she sink? How many people died on the Titanic?

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Titanic Facts for Kids | 8 Hidden Facts about Titanic

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Everybody knows the story of Titanic and the iceberg it hit on the night of April 14, 1912. When it first set sail, the Titanic was known for its extraordinary size and was thought to be “The Unsin…

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Rachel Atcheson is the Humane League's Philadelphia director. I wanted to interview her to shine a light on her incredible work as an animal rights activist and, hopefully, encourage and inspire teens to take action on behalf of animals.

Why did you decide to become an animal rights advocate?

I decided to help animals because they are the most underrepresented group of beings in today's society. Some might think that animals get sufficient attention, but cats and dogs receive the bulk of it. When we hear of a hoarder with 100 cats and none of them sufficiently nourished, we empathize with those cats. But farm animals are suffering every day in factory farms and we rarely hear their stories. I decided to help farm animals because they need a louder voice.

How did you think you would be able to make a difference?

I didn't start out thinking I could make much of a difference. I began volunteering with a local animal protection group (the group I work for now, the Humane League), but I had no idea the ripple effect my activism would have in the world. With the help of many mentors, I've been able to hone my activism skills and influence many people to be more involved in activism.

Has your life changed since you started helping animals?

My life has changed dramatically. I have become more compassionate and more empathetic toward the plight of both human and non-human animals. I have taken on the role of an activist - and I think this is the most important change in my life, because now I understand that no matter how much a person wants to change the world, it's the hard work, the elbow grease, that really creates meaningful change.

What is the main problem animals face right now?

These issues of confinement and mutilation are common for farm animals everywhere. All factory farms treat animals as if they were commodities, property, and this is, I believe, the biggest problem facing farmed animals right now.

I'd love to tell you the story of one animal in particular. Buttercup is an egg-laying hen who has lived her entire life in a cage smaller than a piece of paper. She has never met her mother. Because of her close confinement with other chickens, Buttercup's beak was seared off with a hot blade soon after she was born so she wouldn't peck any other chickens in her cage. Ever since she was young, Buttercup has lived in this battery cage. She has never been outside, never felt the sun on her feathers or the grass beneath her feet. And she'll remain there for her whole life. Her feet might become mangled in the wire mesh she stands on. If she develops an infection, she will not receive veterinary attention.

On a typical egg-laying farm, there could be 500,000 chickens, so Buttercup is just one of many chickens who will never see the outside of that warehouse.

What does it take to become an effective activist?

Be positive, set a good example, read literature on effective activism and, most of all, practice. If you want to learn more about animal activism, consider getting involved with groups such as the Humane League, Mercy for Animals, or Compassion Over Killing. All of these groups are very effective in their work.

How can we make a difference in the lives of animals?

The number-one way you can make a difference in the lives of animals is to cut back on the amount of animals you eat; consider trying Meatless Monday. And if you already do not consume much meat, consider going vegetarian. Are you already a vegetarian? Cut back on the amount of eggs and dairy you consume. And finally, try veganism.

While it may seem daunting to do anything in this list, if you take it one step at a time, one meal at a time, you'll find it easy, exciting, and fulfilling. We have an opportunity to make a difference in the lives of animals three times a day - breakfast, lunch, and dinner - and with your help, we will see changes for farm animals.

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Rachel Atcheson is the Humane League’s Philadelphia director. I wanted to interview her to shine a light on her incredible work as an animal rights activist and, hopefully, encourage and inspire teens to take action on behalf of animals.&nbs

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The Benefits to Community Service

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What’s Really Warming the World? Climate deniers blame natural factors; NASA data proves otherwise

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A breakthrough deal to attempt to limit global temperature rises was agreed at a conference of world nations in December 2015. These charts from the time show how and why the Earth's climate is changing.

1. What is the problem?

The world is getting warmer

The average temperature of the Earth's surface has increased by about 0.85°C (1.4F) in the last 100 years. Up until 2015, 13 of the 14 warmest years had been recorded in the 21st Century. 2015 then became the hottest year on record, but was surpassed by record-breaking 2016.

10 warmest years

10 coldest years

20th Century average temperature

Hotter

Colder

Source: NOAA

2. Why is this happening?

Greenhouse gases, mainly carbon dioxide

Scientists believe that gases released from industry and agriculture (known as emissions) are adding to the natural greenhouse effect, the way the Earth's atmosphere traps some of the energy from the Sun.

Human activities such as burning fossil fuels like coal, oil and natural gas are increasing the amount of carbon dioxide (CO2), the main greenhouse gas responsible for global warming. Carbon-absorbing forests are also being cut down.

The concentration of CO2 in the atmosphere is now higher than at any time in the last 800,000 years and reached a record high in May 2015. But 2016 marked five consecutive years of CO2 increases of at least two parts per million.

Scripps CO2 Program, data from the Mauna Loa Observatory

3. What are the effects?

Arctic sea ice melt

Higher temperatures, extreme weather events and higher sea levels are all linked to a warming climate and could have a drastic effect on the world's regions.

Since 1900, sea levels have risen by on average about 19cm globally. The rate of sea-level rise has accelerated in recent decades, placing a number of islands and low-lying countries at risk.

The retreat of polar ice sheets is an important contributor to this rise.

Arctic sea ice is also shrinking because of higher temperatures, though it makes little contribution to raised sea levels.

An area of sea ice roughly 10 times the size of the UK has been lost when the current day is compared with average levels from the early 1980s.

Arctic sea ice min. extent: 1980, 7.8 million sq km. 2015, 4.6 million sq km

Source: National Snow and Ice Data Center

4. What does the future hold?

Higher temperatures and more extreme weather

The scale of potential impacts is uncertain.

The changes could drive shortages in freshwater, bring about major changes in food production conditions and cause a rise in the number of casualties from floods, storms, heat waves and droughts.

This is because climate change is expected to increase the frequency of extreme weather events - however linking any single event to global warming is complicated.

Projected temperature change (1986-2005 to 2081-2100)

If greenhouse gas emissions peak between 2010-2020 and then decline substantially (RCP2.6)

If greenhouse gas emissions continue to rise throughout the 21st century (RCP8.5)

Source: International Panel on Climate Change - Fifth Assessment Report (AR5)

5. What can be done?

World's top ten greenhouse gas emitters

The top 10 greenhouse gas emitters make up over 70% of total emissions

Source: Carbon Brief, figures are for 2012

6. Limiting the damage

By the end of October 2015, 146 countries had submitted national climate plans on curbing emissions that are expected to form the cornerstone of a binding, global treaty on climate change.

According to a UN report, submissions in their current form point to a rise of 2.7°C above pre-industrial levels by 2100.

Scientists have determined that if temperature rises surpass 2°C, this will lead to substantial and dangerous climate impacts, which will hit the world's poor in particular.

Average warming (°C) projected by 2100

Source: Climate Action Tracker, data compiled by Climate Analytics, ECOFYS, New Climate Institute and Potsdam Institute for Climate Impact Research.

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Six graphics that explain climate change as world leaders gathered in Paris for COP21.

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Could we Survive  Prolonged Space Travel

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Could we Survive  Prolonged Space Travel

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Could we survive prolonged space travel? - Lisa Nip

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Prolonged space travel plays a severe toll on the human body: microgravity impairs muscle and bone growth, and high doses of radiation cause irreversible mutations. As we seriously consider the human species becoming space-faring, a big question stands: even if we do break free f…

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NASA Studies Twin Astronauts Living in Space

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NASA Studies Twin Astronauts Living in Space

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Infographic

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Newsela | Instructional Content Platform

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Newsela is an Instructional Content Platform that supercharges reading engagement and learning in every subject.

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"One giant leap for mankind," thanks to the Apollo program.

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For centuries, people dreamed about leaving Earth and travelling to other worlds. Then, in 1957, the Soviet Union made the first small step into space by launching a small satellite, called Sputnik. The Space Age had begun.

Early space activities were dominated by the United States and the Soviet Union. However, as time went by, Europe and Japan also learned how to build their own satellites and rockets. Today, countries such as China, India, South Korea, Israel and Brazil are developing their own space industries.

During the last 60 years, unmanned probes have been sent towards all of the planets in the Solar System, as well as many satellites, asteroids and comets. Spacecraft have soft-landed on half a dozen worlds, while rovers have driven over the surfaces of the Moon and Mars. The Sun has also been explored in great detail by a fleet of spacecraft.

Many space observatories, such as the Hubble Space Telescope, have been launched to look at the distant Universe. They have sent back some amazing pictures taken in visible light. But they can also observe stars and galaxies at wavelengths that are invisible to human eyes - radio, infrared, ultraviolet, X-rays and gamma rays. The flood of discoveries has changed the way we look at the Universe.

More than 500 people have also flown in space since Yuri Gagarin paved the way in 1961. 20 people have travelled to the Moon and 12 of them have walked on the Moon. Space stations have been built, and astronauts have learned to live and work in space for many months, or even years.

Last modified 26 January 2011

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For centuries, people dreamed about leaving Earth and travelling to other worlds. Then, in 1957, the Soviet Union made the first small step into space by launching a small satellite, called Sputnik. The Space Age had begun.

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History for kids - Free history network for kids

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Hiroshima and Nagasaki - History for kids

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Atomic Bomb Background Before the war, many scientists had been investigating the possibility of generating energy and even weapons from the atom, the building block of the universe and everything that surrounds us. The famous scientist Albert Einstein represented these leading thinkers by writing to the American president Franklin Roosevelt in August 1939. He told

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First Atomic Bomb Dropped on Japan; Missile Is Equal to 20,000 Tons of TNT; Truman Warns Foe of a ‘Rain of Ruin’

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Report by Britain: ‘By God’s Mercy’ We Beat Nazis to Bomb, Churchill Says: Roosevelt Aid Cited: Raiders Wrecked Norse Laboratory in Race for Key to Victory

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The  Hiroshima Arrack: What you Need to Know

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The  Hiroshima Arrack: What you Need to Know

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Newsela | The Hiroshima bombing: What you need to know about the nuclear attack

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The effects brought about by the Hiroshima bombing

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How Climate Change is Impacting Animals in the  Canadian Artic

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How Climate Change is Impacting Animals in the  Canadian Artic

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Traditional practices have also undergone the impact of climate change. Before her grandfather died, Jennifer interviewed him about his favorite spot for hunting seals, which was only reachable when the water was frozen solid. "It doesn't get that cold anymore, so it doesn't actually freeze anymore," Jennifer says. "The traditional knowledge that has been passed down orally, telling stories of that particular place, it was gone with him. He was the last of his family to have known all the traditional knowledge of that specific place."

A week before we were in Cape Dorset, ice barricaded the Inuit community. Ships normally can get through the Arctic for only about six weeks in the summer. The only way out most of the year is by snowmobile or airplane, according to what locals told me.

In July, the roads are ditches of mud. Clouds of mosquitoes swarmed Brianna Rowe, 26, a shipmate I followed as she interviewed Inuit children and teachers about their lives, school, family, and traditions.

Brianna, who works for Reach the World and is director of the climate-change education project Disappearing Ice, connects classrooms with travelers via the Internet, so kids can travel the world virtually. She was using her vacation, as a student member of the Explorers Club, to connect U.S. classrooms with Arctic classrooms so kids can learn about one another's cultures - including how the U.S. is one of the main countries affecting the climate much farther north.

"The decisions that people make in the U.S. have a global impact," Brianna tells Teen Vogue. "It is important for everybody to be aware of their decisions, and their impact on the environment has an effect on the entire world's environment."

Kristin Gates, a park ranger who trekked alone across the Brooks Range, knows this all too well. Part of the year, 30-year-old Kristin patrols Denali National Park by dog sled, and she's making a short film about plastics pollution and garbage in the Arctic. "Climate change is something that affects us every day during the winter months," she tells Teen Vogue. Frozen rivers are Alaska's highways, and when they don't freeze solid, travel becomes dangerous and difficult.

Unfortunately, mushing (a form of travel that relies on dogs to pull a sled), which Kristin was hoping to learn about first-hand, is now almost nonexistent. Dog mushing as a practice mostly died out after Inuit communities were settled in villages by the Canadian government in the 1950s, so she heard stories about the old days but has not found anyone traveling by dog sled. Nowadays, travel mostly uses motors and gas, in four-wheelers, snowmobiles, and trucks. Kristin enlisted some of us from the ship and others from the community to clean up the beach. In about an hour we collected 17 bags of trash, a potential threat to seabirds and mammals.

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I Went to the Canadian Arctic and Saw Climate Change's Impact First-Hand

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In this reported piece, 12-year-old writer Roxanna Pearl Beebe-Center explains what she learned about the impact of climate change on animals while visiting the Canadian Arctic.

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Newsela | Time Machine (1912): Wreck of the White Star liner Titanic

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How the world's greatest steamship went down with 1,600 souls.

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For more than 50 years, NASA's Human Research Program (HRP) has studied what happens to the human body in space. Researchers are using what they learn to design procedures, devices, and strategies to keep astronauts safe and healthy throughout their missions.

NASA engineers use the lessons learned to better design spacecraft and improve the fit and functions of spacesuits. The research also aids in the development and assessment of medical standards, physical fitness programs and standards, physiological and psychological adaptation training, sensorimotor training, and nutritional health protocols.

Understanding the effects of spaceflight on humans is essential as astronauts move from the International Space Station in low-Earth orbit to deep space destinations on and around the Moon, and beyond. With the Artemis program, NASA will land the first woman and next man on the Moon using innovative technologies to explore more of the lunar surface than ever before, gathering new data while keeping astronauts healthy and safe.

NASA is particularly interested in investigating how the body reacts to long-duration spaceflight as the agency plans for extended missions on the Moon and Mars. Scott Kelly and Christina Koch were the first American astronauts to spend nearly one year in space onboard the space station, twice the previous average. Scott, Christina, and seven other astronauts have spent more than 200 days in space during a single spaceflight.

In addition to spending almost a year in space, Scott was involved in the unique Twins Study. Scott participated in several biomedical studies onboard the space station while his identical twin brother, retired astronaut Mark Kelly, stayed on Earth as a control subject, someone who provides a basis of comparison.

The study provided valuable data about what happened to Scott, physiologically and psychologically, as compared to his brother Mark. Their contribution to science helped generate data that researchers will use for decades to come.

NASA is planning more dedicated extended-duration research on the space station. The studies are expected to shed light on how the body adapts to living in the spaceflight environment for various longer time periods, which will be pivotal for future deep space missions.

What exactly happens to the body in space and what are the risks? Are the risks the same for astronauts who spend six months on the space station versus those who may be away on a Mars mission for years?

The simple answer is: No. NASA is researching risks for Mars missions which are grouped into five human spaceflight hazards related to the stressors they place on the body. These can be summarized with the acronym " RIDGE," short for Space Radiation, Isolation and Confinement, Distance from Earth, Gravity fields, and Hostile/Closed Environments.

Space Radiation

On Earth, we are shielded by the planet's magnetic field and atmosphere from the majority of particles that make up the space radiation environment. Even so, everyone on Earth is exposed to low levels of radiation every day, from the food we eat to the air we breathe.

In space, astronauts are exposed to varied and increased levels of radiation that are different from those on Earth. Three major sources contribute to the space radiation environment: particles trapped in Earth's magnetic field, solar energetic particles from the Sun, and galactic cosmic rays.

A big challenge in reducing the risks of radiation exposure is that some space radiation particles (especially galactic cosmic rays) are difficult to shield against. Exposure to increased radiation can be associated with both short- and long-term health consequences, depending on how much total radiation astronauts experience and the time frame in which they experience that exposure.

Increased risk of cancer and degenerative diseases, such as heart disease and cataracts, have been observed in human populations exposed to radiation on Earth. Health risks for astronauts from radiation exposure in space are mainly driven by long-term impacts.

Additionally, animal and cellular research indicate that the type of radiation in the space environment has a larger impact on health outcomes compared to the radiation experienced on Earth. Not only will astronauts be exposed to more radiation in space than on Earth, but the radiation they are exposed to could pose increased risks.

The Key: The current strategy to reduce the health risks of space radiation exposure is to implement shielding, radiation monitoring, and specific operational procedures. Compared to typical six-month space station missions, later Moon and Mars missions will be much longer on average. Consequently, the total amount of radiation experienced and associated health risks may increase.

NASA is developing new radiation detectors to monitor and characterize the radiation environment, which will provide better estimates of the dose and type of radiation to which the crews are exposed. Scientists and engineers are optimizing and implementing operational procedures that use available vehicle stowage and materials to reduce radiation exposure effectively.

To investigate the health risks of space radiation exposure beyond low-Earth orbit, NASA supports research that analyzes the biological effects of simulated cosmic rays at ground-based research facilities. Research at these facilities helps NASA understand and reduce the risk of space radiation, ensure proper measurement of the doses that astronauts receive on the space station and in future spacecraft, and develop advanced materials that improve radiation shielding for future missions.

Studies of radiation-exposed human cohorts are also being conducted to estimate the health risks in populations relevant to astronauts.

Isolation and Confinement

Expedition crews selected for a stay onboard the space station are carefully chosen, trained, and supported to ensure they will be able to work effectively as a team for the duration of their six to 12-month missions. Crews for a Moon or Mars mission will undergo even more careful assessment, selection, and preparation since they will travel farther and potentially for longer than previous humans in an isolated and confined environment, with only a few other people. Additionally, crews will likely be international and multi-cultural, making cross-cultural sensitivity and team dynamics paramount to mission success.

Ensuring astronauts get quality sleep is also important; otherwise, their internal biological clocks, or circadian rhythm, might be altered by factors like different dark and light cycles, a small and noisy environment, the stress of prolonged isolation and confinement, and a 37-minute extended day on Mars.

It is important to prepare for the fatigue astronauts may experience during spaceflight, given that there will be times with heavy workloads and shifting schedules. To prevent crew boredom, NASA considers the kinds of activities in which the astronauts will participate during a multi-year round trip to Mars.

Communication and understanding among crew members are vital to the success of the mission, and changes in morale and motivation are possible as the mission unfolds. This may relate to reduced stimulation, the longing for loved ones, or feeling unable to assist with family emergencies back on Earth, regardless of how long the mission lasts.

Using spaceflight analogs on Earth, NASA's research has revealed that both the duration and type of confined and isolated experience are important to consider. The more restricted the space, and the less contact with people outside the environment, the more likely humans are to develop behavioral or cognitive conditions or psychiatric disorders.

The Key: NASA has been studying people in isolated and confined environments for years, and has developed methods and technologies to counteract possible problems.

NASA scientists are using devices, such as actigraphy, that help assess and improve sleep and alertness by recording how much people move and how much ambient light is around them. New lighting, spurred by the development of Light-Emitting Diode (LED) technology, is used on the space station to help align astronaut's circadian rhythms and to improve sleep, alertness, and performance.

A 10-minute self-test of vigilance and attention assesses the effect of fatigue on performance. Astronauts write in journals as a safe place to vent frustrations and provide researchers a tool to study behavioral issues that are on the minds of crew members who are living and working in isolation and confinement.

Researchers are also looking into using virtual reality to simulate relaxing environments to help improve the mood of crews in isolation. Engaging in relevant, meaningful activities, including learning a language or learning new medical skills, could help ward off depression and boost morale. Crews may even tend to a space garden, which could have positive behavioral health benefits in addition to providing a fresh source of food and helping to purify the air.

Researchers are using Earth-based analogs to investigate how muchprivacy and living space will be needed on longer missions where crew members will be restricted in a relatively small spacecraft together. NASA is also determining strategies to formulate the best crew by studying individual and team attributes, composition, and dynamics.

Distance from Earth

The space station orbits 240 miles above Earth. The Moon is 1,000 times farther from Earth than the space station. In contrast, Mars is on average 140 million miles from Earth. With a communication delay of up to 20 minutes one-way while on Mars, astronauts must be able to solve problems and identify solutions as a team without help from NASA's mission control.

The types of food and medicine to be packed for a multi-year trip without access to a grocery store or pharmacy are also important to consider. Unlike space station crews, which regularly receive supplies from cargo flights from Earth, astronauts going to Mars will have to bring all of the food, equipment, and medical supplies they need.

The Key: NASA is using its human spaceflight experience on the space station to figure out what types of medical events happen in space over time and what types of skills, procedures, equipment, and supplies are needed so that they will have a good idea of what to pack for future missions to the Moon and Mars.

Space station astronauts already receive medical training before and during space missions that teach them how to respond to health problems as they arise. For example, astronauts learn how to use onboard space station equipment to produce an intravenous (IV) solution from purified water, which can be used for medical administration.

Crew members also perform ultrasound scans on each other to monitor organ health. If one crew member becomes sick during the mission, crews are ready to perform laboratory testing to help make the right diagnosis and guide treatment.

NASA is working on developing a medical data architecture for spacecraft that enables the capabilities of clinical decision support tools, which could use artificial intelligence and machine learning to further help diagnose and treat various illnesses. Researchers are also looking into the role that virtual assistants could play to help crews identify and respond to spaceflight anomalies quickly for more distant missions.

Additionally, the agency is studying and improving food formulation, processing, packaging, and preservation systems to ensure the nutrients remain stable and the food remains acceptable for years. Space-resilient medications and packaging systems that preserve the integrity of pharmaceuticals for long-duration missions are another significant part of NASA's research.

Gravity Fields

Astronauts will encounter three different gravity fields on a Mars mission. On the six-month trek between the planets, crews will be weightless. While living and working on Mars, crews will be in approximately one-third of Earth's gravity. Finally upon returning home, crews will have to readapt to Earth's gravity.

Transitioning from one gravity field to another is trickier than it sounds. It affects spatial orientation, head-eye and hand-eye coordination, balance, and locomotion, with some crew members experiencing space motion sickness.

Landing a spacecraft on Mars could be challenging as astronauts adjust to the gravity field of another celestial body. When shifting from weightlessness to gravity, astronauts may experience post-flight orthostatic intolerance where they are unable to maintain their blood pressure when standing up, which can lead to lightheadedness and fainting.

NASA has learned that without Earth's gravity affecting the human body, weight-bearing bones lose on average 1% to 1.5% of mineral density per month during spaceflight. After returning to Earth, bone loss might not be completely corrected by rehabilitation; however, their risk for fracture is not higher. Without the proper diet and exercise routine, astronauts also lose muscle mass in microgravity faster than they would on Earth.

Moreover, the fluids in the body shift upward to the head in microgravity, which may put pressure on the eyes and cause vision problems. If preventive or countermeasures are not implemented, crews may experience an increased risk of developing kidney stones due to dehydration and increased excretion of calcium from their bones.

The Key: By analyzing how the body changes in weightlessness and after returning to Earth's gravity, NASA is developing protective measures against these changes for a Mars mission.

Functional task testing is in place to help detect and improve balance control after landing on a gravitational surface. Fine motor skill testing is done to detect any changes in the ability of astronauts to interact with computer-based devices.

Distribution of the fluids in the body is closely monitored to help evaluate any connection to changes in vision. Compression cuffs worn on the thighs help keep the blood in the lower extremities to counteract those fluid shifts. A lower-body negative pressure device could help draw fluids from the head into the legs as well.

Back pain, which some astronauts have reported experiencing during spaceflight, is monitored by obtaining spinal ultrasounds. Muscle size and bone density are assessed for deterioration using MRI and high-resolution imaging techniques, before and after flight. Crew members perform periodic fitness self-evaluations to help researchers better understand the decline in heart function that can occur during spaceflight.

Medicines that NASA is studying, such as potassium citrate, may help combat the physiological change that could increase the risk of developing kidney stones. Bisphosphonate medications have been shown in NASA studies to be effective in preventing bone loss.

NASA has also designed an efficient way to collect and measure how much urine a crew member produces in space, which is essential to human research since it reveals key information about a person's health. For example, researchers can analyze different levels of certain substances in an astronaut's urine to determine whether they are at risk of developing a kidney stone in space, and make modifications to the diet, exercise routine, and water intake as preventive measures.

Aerobic and resistive exercise has been shown to keep the heart healthy, bones and muscles strong, the mind alert, as well as maintain a more positive outlook, and may even help with balance and coordination. Software-generated workout partners could be used to help motivate astronauts to exercise regularly for longer space missions. NASA has even completed a joint Earth-based bed rest study to determine whether centrifuge artificial gravity may be an effective way to counter the physiological effects of weightlessness.

Hostile/Closed Environments

NASA has learned that the ecosystem inside the spacecraft plays a big role in everyday astronaut life in space. Microbes can change characteristics in space, and micro-organisms that naturally live on the human body are transferred more easily from person to person in closed habitats, such as the space station. Stress hormone levels are elevated and the immune system is altered, which could lead to increased susceptibility to allergies or other illnesses.

Earth-based analogs do not perfectly simulate the spaceflight environment, making them insufficient for studying on the ground how human immune systems react in space. However, NASA-funded Antarctic analog studies could provide insight into how certain spaceflight stressors may affect the human immune system. What is known is that spaceflight changes the immune system, although crews do not tend to get sick upon returning to Earth. Even though astronauts' acquired immunity is intact, more research is needed into whether spaceflight induced altered immunity may lead to autoimmune issues, in which the immune system mistakenly attacks the healthy cells, organs, and tissues present in the body.

Beyond the effects of the environment on the immune system, every inch and detail of living and working quarters must be carefully thought-out and designed. No one wants their house to be too hot, too cold, cramped, crowded, loud, or not well lit, and no one would enjoy working and living in such a habitat in space either.

The Key: NASA is using technology to monitor the air quality of the space station to ensure the atmosphere is safe to breathe and not contaminated with gases, such as formaldehyde, ammonia, and carbon monoxide. Thermal Control Systems function to maintain temperatures of the space station and keep astronauts comfortable.

Blood and saliva samples are analyzed to identify changes in the immune system and the reactivation of latent viruses during spaceflight. NASA uses advanced molecular techniques to evaluate the risk of microbes that may cause illness for crew members. Various parts of the body and the space station are swabbed regularly for analysis of the microbial population that inhabits the environment. Crews change out air filters, clean surfaces, and treat the water to prevent illnesses that may result from the accumulation of contaminants.

Astronauts are advised to get a flu shot to boost their immunity and are quarantined before their missions to avoid catching any sort of illness before launch. During the Twins Study and One-Year Mission, Scott Kelly administered a flu vaccine to himself while his brother received his on Earth. The immunization proved to work as well in space as it does on Earth, which is a good finding for longer missions to the Moon and Mars.

Living quarters and work environments are carefully planned and evaluated to ensure that designs balance comfort and efficiency. Lighting onboard the space station is similar to what would be experienced naturally on Earth, thanks to the new LED lighting system.

NASA is taking action on all of these risks and working to solve the challenges of human spaceflight with some of the most brilliant minds in their fields. The results garnered from laboratories, ground analogs, and space station missions will provide more insight into these adaptations and present a stepping stone for longer missions.

On upcoming Artemis missions to lunar orbit and the surface of the Moon, even more data will be collected as this work continues. On future longer duration missions to the Moon and Mars, astronauts will benefit from years of research that will ensure they will be able not just to survive, but thrive on their spacefaring missions.

Click here for an infographic summarizing the risks of human spaceflight and the safeguards against them.
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NASA's Human Research Program, or HRP, pursues the best methods and technologies to support safe, productive human space travel. Through science conducted in laboratories, ground-based analogs, and the International Space Station, HRP scrutinizes how spaceflight affects human bodies and behaviors. Such research drives HRP's quest to innovate ways that keep astronauts healthy and mission-ready as space travel expands to the Moon, Mars, and beyond.
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For more than 50 years, NASA's Human Research Program has studied what happens to the human body in space.

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Medieval Human Plague Still Lurking in the US

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Medieval Human Plague Still Lurking in the US

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It's not like anybody believes their shopping carts are clean. Most supermarkets place a dispenser of sanitizing wipes nearby, as if to hint at the exact opposite.

But in case you were on the fence, yes, they're gross.

A study of 85 random shopping carts conducted by Dr. Charles P. Gerba found that 50 percent carried E. coli, while 72 percent contained coliform bacteria. "The exceptionally high level of coliform bacteria suggests that fecal material may be involved in cart contamination," the report further stated.

In other words, your cart most likely harbors bathroom germs.

According to Donna Duberg, an assistant professor of clinical laboratory science at Saint Louis University, these pathogens find their way into our carriages through a number of avenues. "Certainly children can be a source of the germs," she explains, as toddlers often ride in carts when accompanying their parents, but Duberg doesn't downplay the role of the consumers either. "We may bring in germs with our hands," she adds.

Depending on our immune systems, many of these pathogens have the potential to make us sick, too. "Especially the fecal coliforms," notes Elizabeth Scott, an assistant professor of biology at Simmons University in Boston. "The concern is that we can pick up pathogens from the cart that can be transmitted directly to our mouths or to other foodstuffs."

Is this really that big of a concern, though? Germs are everywhere, from to They're always going to be present, so how bad could a shopping cart be?

Duberg cites Gerba's findings for the answer: "[There are] 138,00 total bacteria per square inch of a shopping cart - an amount which exceeds the number of bacteria in the average public restroom," she says. "These are fecal bacteria capable of causing illness."

Unfortunately, fecal germs aren't the only bacteria to be wary of. "There are bacteria capable of causing food-borne illnesses such as Salmonella, Shigella, Listeria, and, of course, E. coli O157H7 that may be hiding in the food we are purchasing, especially the fruits and vegetables and raw meats," says Duberg. "You can tell by doing a quick scan of food recalls," such as these online safety alerts posted by the FDA, she adds.

Taking both fecal and food-borne pathogens into account, it's no wonder there are disinfecting wipes in almost every supermarket. But as it turns out, they may not be as effective as we think.

"In theory, it's a good idea, but rather hard to achieve," explains Scott. "Where do you apply the disinfectant? How effective is the disinfectant? It's much better to practice careful hand hygiene and use alcohol hand sanitizer and hand washing."

Duberg adds that most of the wipes are utilizing benzalkonium chloride - and not bleach or alcohol - a disinfecting agent. This means that in order to sanitize, shoppers should be thoroughly wetting the surface areas (handles, grates, coffee cup holders) with the wipes. But if a shopper wanted to disinfect, Duberg says most brands of benzalkonium chloride recommend you leave the surfaces wet for up to four minutes.

The good news, she adds, is that if you thoroughly wet the surfaces with a benzalkonium chloride wipe, "you're going to get way over 99 percent" of the germs.

Or, if you'd rather skip that step, you can just grab a hand-held basket instead. Baskets might contain the same pathogenic bacteria as a cart, but as Scott says, "If it's baskets vs. carts, at least baskets aren't used to carry kids."

But just to be safe, you should probably make time to wipe down the basket, too.

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Maybe a bit grosser than you initially thought.

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Hunting the Mysterious Source of Global Illness

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Hunting the Mysterious Source of Global Illness

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aerosol A group of tiny particles suspended in air or gas. Aerosols can be natural, such as fog or gas from volcanic eruptions, or artificial, such as smoke from burning fossil fuels.

agent A compound or activating form of energy (such as light or other types of radiation) that has a role to play in getting something done.

air masses Large volumes of air, sometimes covering many hundreds or thousands of square kilometers (square miles), that typically have a consistent temperature or water-vapor content. Air masses are often classified by their source, such as continental, arctic or tropical. Air masses and other weather systems are steered across Earth's surface by jet streams and by differences in atmospheric pressure.

CandidaA genus of yeasts that are ubiquitous across the globe. More than 20 species have been linked to disease in people and animals.

cell The smallest structural and functional unit of an organism. Typically too small to see with the naked eye, it consists of watery fluid surrounded by a membrane or wall.

chemistry The field of science that deals with the composition, structure and properties of substances and how they interact with one another. Chemists use this knowledge to study unfamiliar substances, to reproduce large quantities of useful substances or to design and create new and useful substances.

climate The weather conditions prevailing in an area in general or over a long period.

clot (in medicine) A collection of blood cells (platelets) and chemicals that collect in a small region, stopping the flow of blood.

computer model A program that runs on a computer that creates a model, or simulation, of a real-world feature, phenomenon or event.

current A fluid body - such as of water or air - that moves in a recognizable direction.

DNA (short for deoxyribonucleic acid) A long, double-stranded and spiral-shaped molecule inside most living cells that carries genetic instructions. In all living things, from plants and animals to microbes, these instructions tell cells which molecules to make.

environment The sum of all of the things that exist around some organism or the process and the condition those things create for that organism or process. Environment may refer to the weather and ecosystem in which some animal lives, or, perhaps, the temperature, humidity and placement of components in some electronics system or product.

epidemic A widespread outbreak of an infectious disease that sickens many people (or other organisms) in a community at the same time. The term also may be applied to non-infectious diseases or conditions that have spread in a similar way.

fungus (plural: fungi) One of a group of single- or multiple-celled organisms that reproduce via spores and feed on living or decaying organic matter. Examples include mold, yeasts and mushrooms.

haze Fine liquid or solid particles scattered through the atmosphere that make it hard to see. Haze can be caused by harmful substances such as air pollutants or by water vapor.

heart attack Permanent damage to the heart muscle that occurs when one or more regions of it become starved of oxygen, usually due to a temporary blockage in blood flow.

infection A disease that can spread from one organism to another. It's usually caused by some sort of germ.

nucleus Plural is nuclei. (in biology) A dense structure present in many cells. Typically a single rounded structure encased within a membrane, the nucleus contains the genetic information.

organ (in biology) Various parts of an organism that perform one or more particular functions. For instance, an ovary is an organ that makes eggs, the brain is an organ that interprets nerve signals and a plant's roots are organs that take in nutrients and moisture.

outbreak The sudden emergence of disease in a population of people or animals. The term may also be applied to the sudden emergence of devastating natural phenomena, such as earthquakes or tornadoes.

Pacific The largest of the world's five oceans. It separates Asia and Australia to the west from North and South America to the east.

particle A minute amount of something.

pathologist Someone who studies disease and how it affects people or other infected organisms.

pediatrics A field of medicine that has to do with children and especially child health. A doctor who works in this field is known as a pediatrician.

physics The scientific study of the nature and properties of matter and energy. Classical physics is an explanation of the nature and properties of matter and energy that relies on descriptions such as Newton's laws of motion

red blood cell Colored red by hemoglobin, these cells move oxygen from the lungs to all tissues of the body. Red blood cells are too small to be seen by the naked eye.

tissue Any of the distinct types of material, comprised of cells, which make up animals, plants or fungi. Cells within a tissue work as a unit to perform a particular function in living organisms. Different organs of the human body, for instance, often are made from many different types of tissues. And brain tissue will be very different from bone or heart tissue.

toxin A poison produced by living organisms, such as germs, bees, spiders, poison ivy and snakes.

vaccine A biological mixture that resembles a disease-causing agent. It is given to help the body create immunity to a particular disease. The injections used to administer most vaccines are known as vaccinations.

virus Tiny infectious particles consisting of RNA or DNA surrounded by protein. Viruses can reproduce only by injecting their genetic material into the cells of living creatures. Although scientists frequently refer to viruses as live or dead, in fact no virus is truly alive. It doesn't eat like animals do, or make its own food the way plants do. It must hijack the cellular machinery of a living cell in order to survive.

weather Conditions in the atmosphere at a localized place and a particular time. It is usually described in terms of particular features, such as air pressure, humidity, moisture, any precipitation (rain, snow or ice), temperature and wind speed. Weather constitutes the actual conditions that occur at any time and place. It's different from climate, which is a description of the conditions that tend to occur in some general region during a particular month or season.

yeast One-celled fungi that can ferment carbohydrates (like sugars), producing carbon dioxide and alcohol. They also play a pivotal role in making many baked products rise.

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Hunting the mysterious source of a global illness

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Doctors and scientists around the world are scouring the environment for the elusive cause of Kawasaki disease, a harmful childhood illness.

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When she was 9 years old, Ann Albright went to the doctor with odd flulike symptoms. She was exhausted. She had to go to the bathroom frequently in the middle of the night. She was always thirsty. Even her vision was blurry.

After a few tests, the doctor pulled Albright's mother aside.

"I still remember it very vividly," says Ann Albright, now more than 40 years later. "My mom left the room with the doctor and came back in with tears running down her cheeks."

The verdict: diabetes, a disease that affects the way people process food.

At the time, the 1960s, the diagnosis meant that young Ann would never have the carefree childhood her mother wanted for her. For the rest of her life, she would have to give herself shots several times a day. She would need to be very careful about what she ate. And she might not realize all of her dreams in life.

"In the era I was diagnosed, most people were told they'd have a shorter life span," Albright says. "As a little girl with diabetes moving into adulthood, I wondered would I be able to have kids? Would I be able to have a life?"

Science has come a long way since then, says Albright, partly as a result of her own efforts: She's now a doctor and diabetes researcher at the Centers for Disease Control and Prevention in Atlanta. Since her diagnosis, researchers have developed better technologies, more effective medicines and a sharper understanding of how diabetes works.

Despite the advances, though, scientists still can't answer a lot of basic questions about what causes diabetes. There still is no cure. And living with the disease remains difficult.

"Everything changes" after a diabetes diagnosis, says Ali Reed, a pediatric endocrine fellow at the University of California, San Francisco. "Life becomes more complicated."

What's more, diabetes is on the rise - in both adults and kids. One version of the disease, called type 2 diabetes, is increasing at an especially alarming rate.

Scientists have linked type 2 diabetes with obesity. So now, more than ever, doctors are urging young people to start developing healthy habits as early as possible.
Breakdown
Diabetes refers to a group of diseases, but there are two main kinds: type 1 and type 2. In both types, the trouble begins with the body's ability to deal with sugar.

Sugar is the body's main fuel source. When you eat, your digestive system breaks down your food into basic parts, including proteins, fats and a simple sugar called glucose. Glucose gets absorbed through the intestines. From there, it enters the bloodstream. Circulating blood delivers glucose to all the cells, which convert it into energy.

At least, that's what's supposed to happen. In people with diabetes, however, sugar can't get from the bloodstream into the cells. A hormone, or messenger molecule, called insulin is normally responsible for that transfer. But in diabetics, insulin doesn't do its job.

As a result, sugar builds up in the bloodstream. When levels of sugar in the blood stay high, the condition is called chronic. And for reasons scientists don't yet understand, chronically high blood sugar can lead to blindness, kidney damage, limb amputations, heart attacks and more.

"It's not a death sentence, but it's a very serious disease," Albright says.
Two types
Exactly how diabetes affects a patient's life depends in part on which type of diabetes a person has. There are important differences between the two main types.

Type 1 diabetes is the kind Albright has. In this version of the disease, the body stops producing insulin. Symptoms usually begin in kids or teenagers.

After they're diagnosed and for the rest of their lives, type 1 diabetics need to regularly test their blood sugar levels with a pinching tool that draws a little blood. They also have to give themselves shots of insulin several times a day to control blood sugar levels. So far, scientists don't know how to prevent type 1 diabetes.

Type 2 diabetics make insulin, but their bodies don't use the hormone properly. Type 2 diabetes is far more common than type 1, and most people who have type 2 are adults. These days, though, more and more kids are coming to their doctors with symptoms of type 2 diabetes.

Doctors already know that adults who develop type 2 diabetes tend to be overweight or obese. And as kids have become increasingly overweight, the disease has started appearing at younger and younger ages.

Shorrocks/iStockphoto

As recently as a decade ago, type 2 diabetes was called "adult-onset" because kids just didn't get it.

"When this disease we used to only see in adults started happening in adolescents, it was just shocking to people," Albright says. "Pediatricians just didn't know what to do."
Healthy living
Doctors already knew that adults who develop type 2 diabetes tend to be overweight or obese. (Scientists can't yet explain why.) And as kids have become increasingly overweight, the disease has started appearing at younger and younger ages.

In the United States, two out of three adults are now overweight, according to the CDC. Nineteen percent of kids between the ages of 6 and 11 are overweight, compared with 7 percent just 20 years ago. Over the same period, the proportion of overweight teens rose from 5 percent to 17 percent.

(You can find out whether you are overweight by plugging numbers into a calculator at an online site. Also, see the sidebar "Understanding Body Mass Index" at the bottom of this article.)

Like their type 1 peers, type 2 diabetics have to monitor blood sugar levels. But they often rely on drugs instead of insulin shots. Frequently, they can get the disease under control by simply exercising more and eating reasonable portions of healthy foods.

"We now know that we can prevent or postpone type 2 diabetes by having [adults] at very high risk lose 5 to 7 percent of their body weight," Albright says.

Scientists don't yet know whether the same is true for overweight kids. The trend is so new that CDC researchers are still working to gather basic information about how the disease works in young people.

But it can't hurt to play soccer instead of video games, and to choose fruits and vegetables over junk food.

"There's no harm in having healthier lifestyle habits," Albright says. "Get to know what's going into your body. Make it fun."
Seeking answers
Weighing more than you should doesn't mean you're doomed to develop diabetes. The disease is far more complex than that. And while research has come a long way, plenty of questions remain.

Doctors don't know, for example, why certain ethnic groups have particularly high rates of diabetes, including American Indians, Hispanics and African Americans. Nor can doctors say for sure why the chances of getting diabetes go up if your parents or siblings have it.

Both relationships suggest that genes play a role in setting people up for diabetes. But something in the environment has to push those genes into action, and scientists aren't sure what those triggers are. It's also not clear which genes are involved.

"People spend their whole careers trying to understand this stuff," Albright says.

If you learn you have diabetes, don't despair. There's plenty you can do to live a long and healthy life. Also, know you're not alone.

Reed encourages all newly diagnosed kids to go to one of the nation's many diabetes camps. It can be hugely reassuring, she says, to be surrounded by other kids who feel like you do.

"It's really amazing," Reed says. "It's a very supportive and tolerating environment for kids who are often the only ones at their school with diabetes. At diabetes camp, everyone is going through it together."
Going Deeper:

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When she was 9 years old, Ann Albright went to the doctor with odd flulike symptoms. She was exhausted. She had to go to the bathroom frequently in the middle

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"Suddenly a queer quivering ran under me, apparently the whole length of the ship. Startled by the very strangeness of the shivering motion, I sprang to the floor. With too perfect a trust in that mighty vessel I again lay down. Some one knocked at my door, and the voice of a friend said: 'Come quickly to my cabin; an iceberg has just passed our window; I know we have just struck one.'

On April 10, 1912, the Titanic, largest ship afloat, left Southampton, England on her maiden voyage to New York City. The White Star Line had spared no expense in assuring her luxury. A legend even before she sailed, her passengers were a mixture of the world's wealthiest basking in the elegance of first class accommodations and immigrants packed into steerage.

She was touted as the safest ship ever built, so safe that she carried only 20 lifeboats - enough to provide accommodation for only half her 2,200 passengers and crew. This discrepancy rested on the belief that since the ship's construction made her "unsinkable," her lifeboats were necessary only to rescue survivors of other sinking ships. Additionally, lifeboats took up valuable deck space.
Four days into her journey, at 11:40 P.M. on the night of April 14, she struck an iceberg. Her fireman compared the sound of the impact to "the tearing of calico, nothing more." However, the collision was fatal and the icy water soon poured through the ship.

It became obvious that many would not find safety in a lifeboat. Each passenger was issued a life jacket but life expectancy would be short when exposed to water four degrees below freezing. As the forward portion of the ship sank deeper, passengers scrambled to the stern. John Thayer witnessed the sinking from a lifeboat. "We could see groups of the almost fifteen hundred people still aboard, clinging in clusters or bunches, like swarming bees; only to fall in masses, pairs or singly, as the great after part of the ship, two hundred and fifty feet of it, rose into the sky, till it reached a sixty-five or seventy degree angle." The great ship slowly slid beneath the waters two hours and forty minutes after the collision

The next morning, the liner Carpathia rescued 705 survivors. One thousand five hundred twenty-two passengers and crew were lost. Subsequent inquiries attributed the high loss of life to an insufficient number of lifeboats and inadequate training in their use.

Elizabeth Shutes, aged 40, was governess to nineteen-year-old Margaret Graham who was traveling with her parents. As Shutes and her charge sit in their First Class cabin they feel a shudder travel through the ship. At first comforted by her belief in the safety of the ship, Elizabeth's composure is soon shattered by the realization of the imminent tragedy:

No confusion, no noise of any kind, one could believe no danger imminent. Our stewardess came and said she could learn nothing. Looking out into the companionway I saw heads appearing asking questions from half-closed doors. All sepulchrally still, no excitement. I sat down again. My friend was by this time dressed; still her daughter and I talked on, Margaret pretending to eat a sandwich. Her hand shook so that the bread kept parting company from the chicken. Then I saw she was frightened, and for the first time I was too, but why get dressed, as no one had given the slightest hint of any possible danger? An officer's cap passed the door. I asked: 'Is there an accident or danger of any kind? 'None, so far as I know', was his courteous answer, spoken quietly and most kindly. This same officer then entered a cabin a little distance down the companionway and, by this time distrustful of everything, I listened intently, and distinctly heard, 'We can keep the water out for a while.' Then, and not until then, did I realize the horror of an accident at sea. Now it was too late to dress; no time for a waist, but a coat and skirt were soon on; slippers were quicker than shoes; the stewardess put on our life-preservers, and we were just ready when Mr Roebling came to tell us he would take us to our friend's mother, who was waiting above ...

No laughing throng, but on either side [of the staircases] stand quietly, bravely, the stewards, all equipped with the white, ghostly life-preservers. Always the thing one tries not to see even crossing a ferry. Now only pale faces, each form strapped about with those white bars. So gruesome a scene. We passed on. The awful good-byes. The quiet look of hope in the brave men's eyes as the wives were put into the lifeboats. Nothing escaped one at this fearful moment. We left from the sun deck, seventy-five feet above the water. Mr Case and Mr Roebling, brave American men, saw us to the lifeboat, made no effort to save themselves, but stepped back on deck. Later they went to an honoured grave.
Our lifeboat, with thirty-six in it, began lowering to the sea. This was done amid the greatest confusion. Rough seamen all giving different orders. No officer aboard. As only one side of the ropes worked, the lifeboat at one time was in such a position that it seemed we must capsize in mid-air. At last the ropes worked together, and we drew nearer and nearer the black, oily water. The first touch of our lifeboat on that black sea came to me as a last good-bye to life, and so we put off - a tiny boat on a great sea - rowed away from what had been a safe home for five days.

The first wish on the part of all was to stay near the Titanic. We all felt so much safer near the ship. Surely such a vessel could not sink. I thought the danger must be exaggerated, and we could all be taken aboard again. But surely the outline of that great, good ship was growing less. The bow of the boat was getting black. Light after light was disappearing, and now those rough seamen put to their oars and we were told to hunt under seats, any place, anywhere, for a lantern, a light of any kind. Every place was empty. There was no water - no stimulant of any kind. Not a biscuit - nothing to keep us alive had we drifted long...

Sitting by me in the lifeboat were a mother and daughter. The mother had left a husband on the Titanic, and the daughter a father

and husband, and while we were near the other boats those two stricken women would call out a name and ask, 'Are you there?' 'No,'would come back the awful answer, but these brave women never lost courage, forgot their own sorrow, telling me to sit close to them to keep warm... The life-preservers helped to keep us warm, but the night was bitter cold, and it grew colder and colder, and just before dawn, the coldest, darkest hour of all, no help seemed possible...
...The stars slowly disappeared, and in their place came the faint pink glow of another day. Then I heard, 'A light, a ship.' I could not, would not, look while there was a bit of doubt, but kept my eyes away. All night long I had heard, 'A light!' Each time it proved to be one of our other lifeboats, someone lighting a piece of paper, anything they could find to burn, and now I could not believe. Someone found a newspaper; it was lighted and held up. Then I looked and saw a ship. A ship bright with lights; strong and steady she waited, and we were to be saved. A straw hat was offered it would burn longer. That same ship that had come to save us might run us down. But no; she is still. The two, the ship and the dawn, came together, a living painting."

References:
Elizabeth Shutes' account first appeared in: Gracie, Archibold, The Truth About the Titanic (1913), reprinted in: Foster, John Wilson (editor), The Titanic Reader (1999); Lord, Walter, A Night to Remember (1955); Davie, Michael, Titanic: The Death and Life of a Legend (1986).

How To Cite This Article:
"The Sinking of the Titanic, 1912," EyeWitness to History www.eyewitnesstohistory.com (2000).

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Nine stories made by and about young people making a difference

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Teen producers find and tell stories of young people making a difference in their communities for this special PBS NewsHour Student Reporting Labs feature.

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Space Probe Transmits Stunning new Photos of Pluto

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Space Probe Transmits Stunning new Photos of Pluto

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Fists hit the air and tiny American flags fluttered overhead this morning as a huge crowd in a Laurel, Maryland, conference room cheered for the New Horizons spacecraft's closest approach to Pluto. At 7:50 a.m. ET, the spacecraft swept past Pluto's surface at a distance of about 7,706 miles, closer to the tiny world than most GPS satellites get to Earth.

After an afternoon of nervous anticipation, the jubilation hit a crescendo at 8:52 p.m. ET, as Alice Bowman, the mission operations manager at the Johns Hopkins University Applied Physics Laboratory, announced to the world that the spacecraft had made its anticipated "phone home" signal-confirmation that the flyby was truly successful and that the spacecraft is healthy and ready to transmit some of its first data from the encounter.

"There's a little bit of drama, because this is true exploration. New Horizons is flying into the unknown," mission manager Alan Stern of the Southwest Research Institute said during a morning briefing just after the flyby.

"If you think it was big today, wait until tomorrow and the next day. This is just the beginning," NASA's associate administrator for science missions, John Grunsfeld, later told the crowd during a post-signal briefing. "As a team, we all have made history. This can never be repeated. This is in the history books."

As part of its last safety check before the flyby, New Horizons beamed back one high-resolution color picture of Pluto, seen above, showing the surprisingly varied terrain on this alien world. With a resolution of about 2.5 miles per pixel, the stunning image hints at a dynamic planet with possible tectonic activity and strong atmospheric cycles, Stern says.

"This image is oriented with north at the top. The dark regions are near Pluto's equator," he says. "We can see a history of impacts, a history of surface activity. But by tomorrow we will show you images with ten times this resolution. Pluto has a lot more to teach us with the data coming down."

The reason for the long delay between the flyby and the signal home is tied to the long journey New Horizons was designed to endure, says Bowman. To ensure its health during the voyage, the team wanted the spacecraft to have as few moving parts as possible, and so the antenna that transmits data is a fixed instrument. The spacecraft must take aim to Earth whenever it wants to communicate, and that's not always the best position for collected data.

"This is the closest approach, and this is when it gets the best science," Bowman told reporters during the pre-encounter briefing. "We don't want it to turn to Earth and talk to us-we want it to do science." Even though the spacecraft is out of touch during this scientifically critical time, the mission team remains confident that everything in its choreographed dance is happening as planned.

"We always talk about the spacecraft being like a child, like a teenager," Bowman said at the time. "Right now there's nothing the operations team can do. We just have to trust that we have prepared it well and send it off on its journey."

Stern was also resolute, noting that the team had done hours of modeling and had collected reams of data on any safety hazards, like debris around Pluto that could damage the fast-moving spacecraft. The odds of something going wrong, he said, were extremely low. "The probability of loss has an upper limit at around 2 parts in 10,000-you could fly hundreds of New Horizons through the Pluto system and expect them to survive," he said.

On the chance that something did break, New Horizons had been taking failsafe data, collecting and transmitting key snippets for the main mission objectives each time it sent back a health status report. That includes the newly arrived image, as well as shots of the large moon Charon, mapping, spectroscopy, thermal data and information about the dust and plasma environments around Pluto and its moons. Tonight's signal, while a sign of success, did not include any additional teasers.

"The signal we got tonight was entirely engineering data ... no science data came home tonight," Stern said during the evening briefing. "We wanted that report to be as brief as possible because as soon as it was over, New Horizons went back to work to collect that data."

Now that mission managers know the craft is safe and loaded with data, the team is eagerly awaiting a fresh round of scientific wonders due tomorrow morning.

"It is truly amazing ... the recovery was flawless. We were up to the challenge-we met it," Bowman added. "And on a personal note, I can't express how I'm feeling to have achieved a childhood dream of space exploration. I'm pretty overwhelmed at this momet. Please tell your children and anybody out there: Do what you're passionate about. Give yourself that challenge and you will not be sorry for it."
Note: This story has been updated with news of the successful signal from the New Horizons probe.

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The New Horizons Probe Has Made Its Closest Approach to Pluto

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Mission scientists have received the confirmation signal that the pre-programmed event went as planned and the craft is healthy

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Cosmos4Kids.com! This astronomy tutorial introduces US space programs. Other sections include the Universe, galaxies, stars, and the Solar System.

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Outer Space All Resources

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