4 ways to make your clothing choices more sustainable: t.ted.com/rdMuK0N

Prester John was a legendary king who propelled the age of exploration, inspired intercontinental diplomacy, and even indirectly began a civil war. However, he never actually existed: t.ted.com/8s1Ntu6

An opera singer’s voice soars above the instruments and its melody rings out across thousands of patrons— all without any assistance from a microphone. How is it possible that a single voice can be heard so clearly? t.ted.com/68B1KmQ

What we know— and don’t know— about schizophrenia: t.ted.com/5473VK0

You've probably heard that if you swallow chewing gum, it stays in your stomach for 7 years. But is that true? t.ted.com/8D33rEs

This wetsuit design stops sharks from eating swimmers (and why it works is pretty fascinating): t.ted.com/h0roJxU

What happens in your body during a miscarriage? Take a closer look at pregnancy loss and three common treatment options: t.ted.com/wikBvcW

Happy Labor Day! Here's why you're taking a day off of work to celebrate work: t.ted.com/yYa3LjZ

Why are we so bad at judging risk? t.ted.com/4jpLsD6

Do you have a voice inside your head? Not everyone does— and the reason why is more complicated than you might think: t.ted.com/xNveB41

6 simple tips for investment beginners: t.ted.com/jjP8pqt

NEW VIDEO: A mystery that has perplexed prominent scientists for decades is the matter of zebra coats: why are they striped? Dig into the common theories about this unique patterning: t.ted.com/fUuxS1U

For patients with advanced blood cancers like leukemia and lymphoma, the best chance for a cure is often a bone marrow transplant. How does this procedure work? t.ted.com/QbtXijm

“Leaving a legacy isn't optional. You're doing it with every smile, every word, every kind word, every harsh word, every action, every inaction, every dollar you spend. And that is what they'll tell of you when you are gone.” t.ted.com/G4e74QH

Could we use the technology of alcohol breathalyzers to detect disease? t.ted.com/DsKv0Eo

How did alcohol go from a simple beverage to fueling global trade and exploration? t.ted.com/jsINXnS

NEW VIDEO: What causes appendicitis? And why is this organ so prone to bursting? t.ted.com/Oj92Axa

Introducing TED Games, a new way to experience the brain-scratching delight of TED every day. And guess what: you can play our very first game right now! See if you can pass The Purring Test: t.ted.com/UE6zDeZ

Explore the ancient Greek philosophy of cynicism, which calls for the rejection of materialism and conformity in favor of a simple life: t.ted.com/gQ6tJ2d

What gives the Leaning Tower of Pisa its infamous tilt? And will it ever fall over? t.ted.com/Er77Cqq