TEDEd

Why did people wear powdered wigs? - Stephanie Honchell Smith

What the oil industry doesn’t want you to know - Stephanie Honchell Smith

Why does hitting your funny bone feel so horrible? - Cella Wright

What’s the smartest age? - Shannon Odell

Which is stronger: Glue or tape? - Elizabeth Cox

Can you prevent Alzheimer's disease? - Krishna Sudhir

Can you solve the birthday cake riddle? - Marie Brodsky

Can you solve the secret assassin society riddle? - Alex Rosenthal

What would happen if you didn’t drink water? - Mia Nacamulli

How did ancient civilizations make ice cream? - Vivian Jiang

Can you solve the unstoppable blob riddle? - Dan Finkel

Why fish are better at breathing than you are - Dan Kwartler

A brief history of toilets - Francis de los Reyes

The language of lying — Noah Zandan

Can you solve the basketball riddle? - Dan Katz

One of the world’s oldest condiments - Dan Kwartler

History's 'worst' nun - Theresa A. Yugar

How much would it cost to buy the ocean? - Astrid J. Hsu

Can you solve the bridge riddle? - Alex Gendler

A brie(f) history of cheese - Paul Kindstedt

History’s deadliest colors - J. V. Maranto

Can you solve the alien probe riddle? - Dan Finkel

The world’s most dangerous fart - Nick Caruso and Dani Rabaiotti

What is schizophrenia? - Anees Bahji