TED-Ed

How Do Pain Relievers Work? – George Zaidan

What’s the fastest way to alphabetize your bookshelf? – Chand John

“The Second Coming” by William Butler Yeats

Ugly History: The Spanish Inquisition – Kayla Wolf

How often should you get a flu shot? – Melvin Sanicas

Why is this painting so captivating? – James Earle and Christina Bozsik

How to practice effectively…for just about anything – Annie Bosler and Don Greene

How does your body know what time it is? – Marco A. Sotomayor

How do we smell? – Rose Eveleth

What causes headaches? – Dan Kwartler

Questions No One Knows the Answers to (Full Version)

Why do we have hair in such random places? – Nina G. Jablonski

The myth of the stolen eyeballs – Nathan D. Horowitz

What does the liver do? – Emma Bryce

The myth of Prometheus – Iseult Gillespie

A brief history of chess – Alex Gendler

How exactly does binary code work? – José Américo N L F de Freitas

Why is it so hard to escape poverty? – Ann-Helén Bay

Can you solve the three gods riddle? – Alex Gendler

Is math discovered or invented? – Jeff Dekofsky

Why I must speak out about climate change – James Hansen

How bacteria “talk” – Bonnie Bassler

Can you solve the multiplying rabbits riddle? – Alex Gendler

How the food you eat affects your brain – Mia Nacamulli

The hidden meanings of yin and yang – John Bellaimey

The first and last king of Haiti – Marlene Daut

How many ways can you arrange a deck of cards? – Yannay Khaikin

The basics of the Higgs boson – Dave Barney and Steve Goldfarb

What is a calorie? – Emma Bryce

The science of macaroni salad: What’s in a molecule? – Josh Kurz

The coin flip conundrum – Po-Shen Loh

Can you solve the troll’s paradox riddle? – Dan Finkel

Why do cats have vertical pupils? – Emma Bryce

What happens when your DNA is damaged? – Monica Menesini

Why do we hiccup? – John Cameron

Why don’t perpetual motion machines ever work? – Netta Schramm

What is depression? – Helen M. Farrell

Everything changed when the fire crystal got stolen – Alex Gendler

What did dogs teach humans about diabetes? – Duncan C. Ferguson

What if you experienced every human life in history?