Anu Puusa: The case for co-ops, the invisible giant of the economy | TED

Can you solve the Trojan War riddle? - Dennis E. Shasha

Brittany Young: How dirt bikes and STEM ignite ingenuity in Baltimore | TED Fellows

Khalil Ramadi: Electronic pills that could transform how we treat disease | TED Fellows

Could you survive the real Twilight Zone? - Philip Renaud and Kenneth Kostel

Katie Mack: The death of the universe -- and what it means for life | TED Fellows

The woman who stared at the Sun - Alex Gendler

Dominic Price: What's your happiness score? | TED

Run, sail, or hide? How to survive the destruction of Pompeii - Gary Devore

The Future of Flying Is Electrifying | Cory Combs | TED Countdown

Can you be awake and asleep at the same time? - Masako Tamaki

Marcos Aguiar: 7 tools for building a business people trust | TED

What happens to your brain during a migraine - Marianne Schwarz

Rumaitha Al Busaidi: Women and girls, you are part of the climate solution | TED Countdown

Should you donate your DNA to help cure diseases? - Greg Foot

Why corporate diversity programs fail -- and how small tweaks can have big impact | Joan C. Williams

What really happened during the Attica Prison Rebellion - Orisanmi Burton

Adam Grant: What frogs in hot water can teach us about thinking again | TED

What’s in the air you breathe? - Amy Hrdina and Jesse Kroll

How one design flaw almost toppled a skyscraper - Alex Gendler

Daniel J. Watts: To accomplish great things, you need to "let the paint dry" | TED

John Marshall: 3 strategies for effectively talking about climate change | TED Countdown

How to get a word added to the dictionary - Ilan Stavans

Steven Allison: Earth's original inhabitants -- and their role in combating climate change | TED

Meet the bluefin tuna, the toughest fish in the sea - Grantly Galland and Raiana McKinney

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

How Your Memory Works -- and Why Forgetting Is Totally OK | Lisa Genova | TED

Can we learn to talk to sperm whales? | David Gruber | TED

Demolition, disease, and death: Building the Panama Canal - Alex Gendler

Nomava Zanazo: 4 myths and misunderstandings about doing business in Africa | TED

Kalika Bali: The giant leaps in language technology -- and who's left behind | TED

Can you solve Dongle's Difficult Dilemma? - Dennis E. Shasha

Megan McArthur: A NASA astronaut's lessons on fear, confidence and preparing for spaceflight | TED

How we can curb climate change by spending two percent more on everything | Jens Burchardt

How do wind turbines work? - Rebecca J. Barthelmie and Sara C. Pryor

How the world’s tallest skyscraper was built - Alex Gendler

The exploitation of US college athletes | Tim Nevius

The world’s most painful insect sting - Justin Schmidt

Language around gender and identity evolves (and always has) | Archie Crowley

The seeds of change helping African farmers grow out of poverty | Andrew Youn

Why are airplanes slower than they used to be? - Alex Gendler

An election system that puts voters (not politicians) first | Amber McReynolds

Why I photograph the quiet moments of grief and loss | Caroline Catlin

Whatever happened to acid rain? - Joseph Goffman

Possible futures from the intersection of nature, tech and society | Natsai Audrey Chieza

This tool will help improve your critical thinking - Erick Wilberding

Online learning could change academia -- for good | Tyler Dewitt

Julia Dhar: How to have constructive conversations | TED