Intermediate Lessons

How do contraceptives work? - NWHunter

Aphasia: The disorder that makes you lose your words - Susan Wortman-Jutt

How the Band-Aid was invented | Moments of Vision 3 - Jessica Oreck

Is graffiti art? Or vandalism? - Kelly Wall

How smart are orangutans? - Lu Gao

Are spotty fruits and vegetables safe to eat? - Elizabeth Brauer

How to visualize one part per million - Kim Preshoff + The TED-Ed Community

Real life sunken cities - Peter Campbell

Which sunscreen should you choose? - Mary Poffenroth

Why do we hiccup? - John Cameron

Should we be looking for life elsewhere in the universe? - Aomawa Shields

Why the metric system matters - Matt Anticole

How to turn protest into powerful change - Eric Liu

How the bra was invented | Moments of Vision 1 - Jessica Oreck

Can you solve the passcode riddle? - Ganesh Pai

How North America got its shape - Peter J. Haproff

Is there a disease that makes us love cats? - Jaap de Roode

How the food you eat affects your brain - Mia Nacamulli

What does it mean to be a refugee? - Benedetta Berti and Evelien Borgman

Why wasn’t the Bill of Rights originally in the US Constitution? - James Coll

Why do our bodies age? - Monica Menesini

How transistors work - Gokul J. Krishnan

The pleasure of poetic pattern - David Silverstein

Can you solve the control room riddle? - Dennis Shasha

Why do people have seasonal allergies? - Eleanor Nelsen

The otherworldly creatures in the ocean's deepest depths - Lidia Lins

Making sense of irrational numbers - Ganesh Pai

The microbial jungles all over the place (and you) - Scott Chimileski and Roberto Kolter

Why is the US Constitution so hard to amend? - Peter Paccone

The psychology behind irrational decisions - Sara Garofalo

Who IS Sherlock Holmes - Neil McCaw

The threat of invasive species - Jennifer Klos

Can plants talk to each other? - Richard Karban

Why do cats act so weird? - Tony Buffington

Why is being scared so fun? - Margee Kerr

Why the insect brain is so incredible - Anna Stöckl

How to spot a fad diet - Mia Nacamulli

Why is Mount Everest so tall? - Michele Koppes

How do glasses help us see? - Andrew Bastawrous and Clare Gilbert

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

Can you solve the locker riddle? - Lisa Winer

The invisible motion of still objects - Ran Tivony

The physics of the "hardest move" in ballet - Arleen Sugano

The poet who painted with his words - Geneviève Emy

5 tips to improve your critical thinking - Samantha Agoos

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

This is Sparta: Fierce warriors of the ancient world - Craig Zimmer

The origins of ballet - Jennifer Tortorello and Adrienne Westwood