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What would happen if the world went vegetarian?

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What would the planet look like if everyone became a vegetarian right now? AsapSCIENCE takes a look at the numbers.

Create and share a new lesson based on this one.

Additional Resources for you to Explore

Would you consider becoming a vegetarian? Why or why not?

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What would happen if the world went vegetarian?

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What would the planet look like if everyone became a vegetarian right now? AsapSCIENCE takes a look at the numbers. Create and share a new lesson based on this one. Additional Resources for you to Explore Would you consider becoming a vegetarian? Why or why not?

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"Early to bed, and early to rise, makes a man healthy, wealthy, and wise."
-- Benjamin Franklin, 1758 (in Poor Richard's Almanac)

A third of our life is spent sleeping. How much sleep a person needs changes as one ages. A new mother needs seven hours of sleep per night, but her newborn baby needs 12-18 hours of sleep per night. In general, the older you get, the less sleep you need. This can give us an idea of why sleep is so important during childhood for both growth and brain development. Without proper sleep, we derail our biological defense from heart attacks, strokes, obesity, diabetes, mood disorders and chronic bodily aches. Visit Caltech Health Education and find out what results from sleep deprivation.

The hippocampus plays an important role in helping us to remember. Are you interested in finding out more about what happens when it is removed from someone's brain? Watch the TED-Ed lesson: What happens when you remove the hippocampus? Find out about Henry Molaison and his memory loss.

Research shows that during sleep our brain's structure is being altered. Synapses are forming during sleep. Learn what this means here. Scientists have proven that we are waking each morning with a different brain, cleansed of toxins and full of new connections from the previous day's learning.

Many studies show the remarkable role of sleep in memory. Sound interesting? Read this article. Wondering what dreaming may have to do with all this? Watch the TEDx Talk, Sleep, Memory and Dreams: Fitting the Pieces Together.

Have you ever wondered if you can learn while you are sleeping? Read the latest research here. Can't fall asleep at night? Need some sleeping tips? Visit the National Sleep Foundation, or the site, Sleep, Sleep Disorders and Biological Rhythms to find answers to those misconceptions you may have about sleep. Finally, for greater understanding of the third of our life we take for granted visit Harvard Medical School Sleep Division.

The track used in this animation is called "No Squirrel Commotion" by Chad Crouch.

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The benefits of a good night's sleep - Shai Marcu

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It's 4am, and the big test is in 8 hours. You've been studying for days, but you still don't feel ready. Should you drink another cup of coffee and spend the next few hours cramming? Or should you go to sleep?

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The dangers of eating sugar.

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How sugar affects the brain - Nicole Avena

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When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more.

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Beach Bodies (in spoken word) - David Fasanya and Gabriel Barralaga

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What leads to the way we perceive our body image? In a thought-provoking and humorous performance at TEDYouth 2012, spoken word poets David Fasanya and Gabriel Barralaga pose a challenge to rethink how we see ourselves.

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This listening includes information about the diet industry and superfoods.

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Conventional wisdom about diets, including government health recommendations, seems to change all the time. And yet ads routinely come out claiming to have THE answer about what we should eat. So how do we distinguish what's actually healthy from what advertisers just want us to believe is good for us?

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How old is your body really?

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Do all of your cells get switched out for new ones every seven years or so? Does anything remain with you throughout your entire life? These are the questions addressed by NPR's Skunk Bear.

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Hidden risks of sitting

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Why sitting is bad for you - Murat Dalkilinç

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Sitting down for brief periods can help us recover from stress or recuperate from exercise. But nowadays, our lifestyles make us sit much more than we move around. Are our bodies built for such a sedentary existence? Murat Dalkilinç investigates the hidden risks of sitting down.

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Using TED Ed can really improve your listening skills. This what you need to do:

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Using TED Ed can really improve your listening skills. This what you need to do:

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1. Go to the TED Ed website and register using your University of Sheffield email address. https://ed.ted.com/
2. Click on a TED Ed lesson on this padlet (and click 'view original' if given).
3. Click on the WATCH button to watch the lecture.
4. Click on the THINK button to answer questions to test your understanding.
5. Click on the DIG DEEPER button if you would like to learn more about the topic.
6. Click on the DISCUSSION button and share your thoughts on the lecture.

For each lecture, I suggest you listen and take notes first (just like you would in the listening exam), then use your notes to answer the questions in the THINK and DISCUSSION sections.

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Why I'm a weekday vegetarian - Graham Hill

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We all know the arguments that being vegetarian is better for the environment and for the animals -- but in a carnivorous culture, it can be hard to make the change. Graham Hill has a powerful, pragmatic suggestion: Be a weekday veg.