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Today, about one-tenth of the world’s population are southpaws. Why are such a small proportion of people left-handed -- and why does the trait exist in the first place? Daniel M. Abrams investigates how the uneven ratio of lefties and righties gives insight into a balance between competitive and cooperative pressures on human evolution.

Lesson by Daniel M. Abrams, animation by TED-Ed.

Why do we itch? - Emma Bryce

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5 tips to improve your critical thinking - Samantha Agoos

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Questions No One Knows the Answers to (Full Version)

Check out TED-Ed's Patreon page: In the first of a new TED-Ed series designed to catalyze curiosity, TED Curator Chris ...

The myth behind the Chinese zodiac - Megan Campisi and Pen-Pen Chen

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Put Salt in the Corners of Your House, and See What Happens

What will happen if you pour salt in the corners of your house? Spoiler: it will change your life. Here are the most unusual and powerful uses for sal...

Genetic Mutations That Can Arise From Incest

Genetic Mutations That Can Arise From Incest 6. The Habsburg Jaw This genetic condition, also called prognathism, is another connected to noble famil...