TED-Ed

String theory – Brian Greene

The Maya myth of the morning star

How does your body know you’re full? – Hilary Coller

What did people do before anesthesia? – Sally Frampton

Why is it so hard to cure ALS? – Fernando G. Vieira

The smallest solution to one of our biggest problems – Tierney Thys & Christian Sardet

The gory history of barber surgeons – Stephanie Honchell Smith

Why do we have to wear sunscreen? – Kevin P. Boyd

How long should your naps be? – Sara C. Mednick

The historic women’s suffrage march on Washington – Michelle Mehrtens

Nature’s smallest factory: The Calvin cycle – Cathy Symington

Why you procrastinate even when it feels bad

How do blood transfusions work? – Bill Schutt

Food expiration dates don’t mean what you think – Carolyn Beans

Epic battles, burials, and races: How horses changed everything – William T. Taylor

Does grammar matter? – Andreea S. Calude

Why is cotton in everything? – Michael R. Stiff

Why people fall for misinformation – Joseph Isaac

The continents are moving. When will they collide? – Jean-Baptiste P. Koehl

Making sense of a visible quantum object – Aaron O’Connell

Pavlovian reactions aren’t just for dogs – Benjamin N. Witts

A guide to the energy of the Earth – Joshua M. Sneideman

What is chemical equilibrium? – George Zaidan and Charles Morton

Why do we feel nostalgia? – Clay Routledge

The epic of Gilgamesh, the king who tried to conquer death – Soraya Field Fiorio

Gravity and the human body – Jay Buckey

Newton’s 3 Laws, with a bicycle – Joshua Manley

Can we create the “perfect” farm? – Brent Loken

The punishable perils of plagiarism – Melissa Huseman D’Annunzio

How many ways are there to prove the Pythagorean theorem? – Betty Fei

Who controls the world? – James B. Glattfelder

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

Sex Determination: More Complicated Than You Thought

Who were the Vestal Virgins, and what was their job? – Peta Greenfield

Which is better: Soap or hand sanitizer? – Alex Rosenthal and Pall Thordarson

Why should you read “Hamlet”? – Iseult Gillespie

Why do we have crooked teeth when our ancestors didn’t? – G. Richard Scott

Why do blood types matter? – Natalie S. Hodge

Do mosquitos actually bite some people more than others? – Maria Elena De Obaldia

The beneficial bacteria that make delicious food – Erez Garty