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Latest Content

Free for the World, Supported by You

World History Encyclopedia is a non-profit organization. For only $5 per month you can become a member and support our mission to engage people with cultural heritage and to improve history education worldwide.

Become a Member Donate

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The free online history encyclopedia with fact-checked articles, images, videos, maps, timelines and more; operated as a non-profit organization.

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Gain instant access to this beautifully designed Unit on Geography, where kids will learn all about Latitude, Longitude, Time Zones, Different Types of Maps, Our Ever-Changing Earth, and more. Access 3 different reading levels perfect for Grades 3-8. Written by subject experts, aligns with standards.

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Learn about historical events and famous people from the past.

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Access Kids Discover’s award-winning library of science, social studies, and high-interest nonfiction on any device, at any time, for one low price. Grades K-8.

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Explore animal profiles, games, videos, photos, and more!

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American Museum of Natural History - Marine Biology

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American Museum of Natural History - Marine Biology

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There are so many ways to live in the sea. Discover its wonder and why we care.

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These databases provide reliable, peer-reviewed information about almost every subject you can imagine! SIGN IN WITH YOUR SCHOOL EMAIL

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These databases provide reliable, peer-reviewed information about almost every subject you can imagine! SIGN IN WITH YOUR SCHOOL EMAIL

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Centers for Disease Control and Prevention (CDC)

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Centers for Disease Control and Prevention (CDC)

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Centers for Disease Control and Prevention

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CDC is the nation's leading science-based, data-driven, service organization that protects the public's health. For more than 70 years, we've put science into action to help children stay healthy so they can grow and learn; to help families, businesses, and communities fight disease and stay strong; and to protect the public's health.

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The FDA is responsible for protecting the public health by ensuring the safety, efficacy, and security of human and veterinary drugs, biological products, and medical devices; and by ensuring the safety of our nation's food supply, cosmetics, and products that products that emit radiation.

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Official website of the National Institutes of Health (NIH). NIH is one of the world's foremost medical research centers. An agency of the U.S. Department of Health and Human Services, the NIH is the Federal focal point for health and medical research.

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Date: Friday, December 8, 2023 Time: 10:30 a.m. to Noon ET

This year's lecture by Dr. Suzanne Bakken will focus on the importance of engaging communities to advance health equity across health informatics and data science innovations. These emerging priorities raise multiple questions surrounding community engagement, such as how community perspectives be elicited and considered throughout the design and implementation life cycle. This virtual event is co-sponsored by NLM, the Friends of the National Library of Medicine, and the American Medical Informatics Association.
LEARN MORE ABOUT THE LECTURE | REGISTER

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National Library of Medicine - National Institutes of Health

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The National Library of Medicine (NLM), on the NIH campus in Bethesda, Maryland, is the world's largest biomedical library and the developer of electronic information services that delivers data to millions of scientists, health professionals and members of the public around the globe, every day.

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Explore COVID-19 and Health Equity Resources

#WeStandWithDocs

Jesse Ehrenfeld, MD, MPH

We salute the health professionals committed to applying their knowledge and skills when needed, though doing so may put them at risk.

AMA Insurance

AMA member physicians get a 35% discount on own-specialty disability insurance premiums.

Calculate Your Quote Now

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The American Medical Association, founded in 1847 and incorporated in 1897, is the largest association of physicians-both MDs and DOs-and medical students in the United States. The AMA's mission is "to promote the art and science of medicine and the betterment of public health."

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Mayo Clinic is a top-ranked hospital in the U.S., with campuses in Arizona, Florida, and Minnesota

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American Heart Association | To be a relentless force for a world of longer, healthier lives

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Learn more about the American Heart Association's efforts to reduce death caused by heart disease and stroke. Also learn about cardiovascular conditions, ECC and CPR, donating, heart disease information for healthcare professionals, caregivers, and educators and healthy living.

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Information and Resources about for Cancer: Breast, Colon, Lung, Prostate, Skin

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Dedicated to helping people who face cancer. Learn about cancer research, patient services, early detection, treatment and education at cancer.org.

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Explore National Geographic. A world leader in geography, cartography and exploration.

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Everything you want to know about birds!

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The National Audubon Society protects birds and the places they need, today and tomorrow, throughout the Americas using science, advocacy, education, and on-the-ground conservation.

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Welcome to BBC Earth, a place to explore the natural world through awe-inspiring documentaries, podcasts, stories and more.

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Send Your Name to Jupiter's Moon Europa

Go farther with NASA - all the way to Jupiter's icy moon Europa. Sign up to send your name on NASA's Europa Clipper spacecraft by Sunday, Dec. 31.

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The Space Station Turns 25

The International Space Station advances scientific knowledge in Earth, space, physical, and biological sciences, for the benefit of all.

Watch

Technology Drives Exploration

NASA's Space Technology Mission Directorate aims to transform future missions while ensuring American leadership in aerospace.

Latest Space Technologies

Today

Image Of The Day

Globular Cluster Omega Centauri Looks Radiant in Infrared

A cluster brimming with millions of stars glistens like an iridescent opal in this image from NASA's Spitzer Space Telescope. Called Omega Centauri, the sparkling orb of stars is like a miniature galaxy. It is the biggest and brightest of the 150 or so similar objects, called globular clusters, that orbit around the outside of our Milky Way galaxy. Stargazers at southern latitudes can spot the stellar gem with the naked eye in the constellation Centaurus. Globular clusters are some of the oldest objects in our universe. Their stars are over 12 billion years old, and, in most cases, formed all at once when the universe was just a toddler. Omega Centauri is unusual in that its stars are of different ages and possess varying levels of metals, or elements heavier than boron. Astronomers say this points to a different origin for Omega Centauri than other globular clusters: they think it might be the core of a dwarf galaxy that was ripped apart and absorbed by our Milky Way long ago. In this new view of Omega Centauri, Spitzer's infrared observations have been combined with visible-light data from the National Science Foundation's Blanco 4-meter telescope at Cerro Tololo Inter-American Observatory in Chile. Visible-light data with a wavelength of .55 microns is colored blue, 3.6-micron infrared light captured by Spitzer's infrared array camera is colored green and 24-micron infrared light taken by Spitzer's multiband imaging photometer is colored red. Where green and red overlap, the color yellow appears. Thus, the yellow and red dots are stars revealed by Spitzer. These stars, called red giants, are more evolved, larger and dustier. The stars that appear blue were spotted in both visible and 3.6-micron-, or near-, infrared light. They are less evolved, like our own sun. Some of the red spots in the picture are distant galaxies beyond our own.

Explore the Universe from your Inbox

Stay up-to-date on the latest news from NASA-from Earth to the Moon, the Solar System and beyond.

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Discover More Topics From NASA

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NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.

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Vikas Chander, taken from Walvis Bay, Namibia

The wreck of a whaling boat lies under the Milky Way near the lighthouse at Pelican Point on Walvis Bay, Namibia. The boat is thought to have been part of a Norwegian fleet that hunted the whales that gave the bay its name to near extinction.

The photographer used a Nikon D850 and a 14-24mm lens at 16mm. The image is a composite of a long foreground exposure (8 minutes at f/2.8 and ISO 800), a stack of sky exposures (twenty 30-second frames at f/2.8 and ISO 6400), plus several additional foreground exposures ranging from 10-30 seconds using a light panel at 3,200 K to light the vessel.

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The world's best website for the the world's best-selling astronomy magazine.

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Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes, comets, constellations, eclipses, exoplanets, nebulae, meteors, quasars, observing, telescopes, NASA, Hubble, space missions, stargazing, and more.

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national oceanic and atmospheric administration

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Videos, group activities, origami, outdoor and tabletop challenges, and a bunch of other projects that are fun, entertaining, and educational.

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Guam: A Biogeographic and Maritime Cultural Landscape Exploration of a World War II Amphibious Battlefield: Expedition Summary

In 2023, a team of researchers conducted fieldwork on Guam in War in the Pacific National Historical Park to further our understanding of one of the most significant invasions of the World War II (WWII) Pacific theater as well as how it may have shaped the natural environment in the area today.

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In 2023, a team of researchers conducted fieldwork on Guam in War in the Pacific National Historical Park to further our understanding of one of the most significant invasions of the World War II (WWII) Pacific theater as well as how it may have shaped the natural environment in the area today.

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Hundreds of scientific articles. Written for kids. Approved by scientists.

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Now students can follow the latest news. All tailored to their reading level. To explore the kids' website, select a grade and discover new stories each week.

View articles by grade level

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Now students can follow the latest news. All tailored to their reading level. To explore the kids' website, select a grade and discover new stories each week. View articles by grade level

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Watch full episodes of your favorite PBS shows, explore music and the arts, find in-depth news analysis, and more. Home to Antiques Roadshow, Frontline, NOVA, PBS Newshour, Masterpiece and many others.

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NPR coverage of space exploration, space shuttle missions, news from NASA, private space exploration, satellite technology, and new discoveries in astronomy and astrophysics.

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PBS Science Shows | Space, Nature and Animal Documentaries

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Immerse yourself in the wonders of our universe and the majesty of the natural world with our huge selection of science and nature documentaries.

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Access Kids Discover’s award-winning library of science, social studies, and high-interest nonfiction on any device, at any time, for one low price. Grades K-8.

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Access Kids Discover’s award-winning library of science, social studies, and high-interest nonfiction on any device, at any time, for one low price. Grades K-8.

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Access Kids Discover’s award-winning library of science, social studies, and high-interest nonfiction on any device, at any time, for one low price. Grades K-8.

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This page is brought to you by the OWL at Purdue University. When printing this page, you must include the entire legal notice.

Copyright ©1995-2018 by The Writing Lab & The OWL at Purdue and Purdue University. All rights reserved. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission. Use of this site constitutes acceptance of our terms and conditions of fair use.

If you are having trouble locating a specific resource please visit the search page or the Site Map. The Citation Chart provides a detailed overview of MLA Style, APA Style, and Chicago Manual of Style source documentation by category.

These OWL resources will help you conduct research using primary source methods, such as interviews and observations, and secondary source methods, such as books, journals, and the Internet. This area also includes materials on evaluating research sources.

These OWL resources will help you use the research you have conducted in your documents. This area includes material on quoting and paraphrasing your research sources, as well as material on how to avoid plagiarism.

These OWL resources will help you learn how to use the American Psychological Association (APA) citation and format style. This section contains resources on in-text citation and the References page, as well as APA sample papers, slide presentations, and the APA classroom poster.

These OWL resources will help you learn how to use the Modern Language Association (MLA) citation and format style. This section contains resources on in-text citation and the Works Cited page, as well as MLA sample papers, slide presentations, and the MLA classroom poster

This section contains information on the Chicago Manual of Style method of document formatting and citation. These resources follow the 17th edition of the Chicago Manual of Style, which was issued in 2017.

These resources describe how to structure papers, cite sources, format references, and handle the complexities of tables and figures according to the latest Institute of Electrical and Electronics Engineers (IEEE) guidelines.

These resources provide guidance on how to cite sources using American Medical Association (AMA) Style, 10th Ed., including examples for print and electronic sources.

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This page is brought to you by the OWL at Purdue University. When printing this page, you must include the entire legal notice. Copyright ©1995-2018 by The Writing Lab & The OWL at Purdue and Purdue University. All rights reserved. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission.

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History Documentaries | American & World History Shows

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Explore history documentaries about American history, world history, the Civil Rights movement and so much more on PBS.

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World geography for kids | National Geographic Kids

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Discover our diverse planet! From landscapes, cultures, wildlife & economies to natural wonders like volcanoes, glaciers & weather in our geography for kids

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Not sure if what you're reading is true? Click here for a list of reliable fact-checking websites!

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Not sure if what you're reading is true? Click here for a list of reliable fact-checking websites!

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CSI Library: Misinformation and Disinformation: Thinking Critically about Information Sources: Web Sites for Fact Checking

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This Research Guide is adapted from a guide developed by the Research Center at the CUNY Graduate School of Journalism