Tavi Gevinson: A teen just trying to figure it out

Michael McDaniel: Cheap, effective shelter for disaster relief

David Mackay: A reality check on renewables

Seth Shostak: ET is (probably) out there — get ready

Ami Klin: A new way to diagnose autism

Jon Nguyen: Tour the solar system from home

Nirmalya Kumar: India's invisible innovation

Todd Humphreys: How to fool a GPS

Noah Wilson-Rich: Every city needs healthy honey bees

John Graham-Cumming: The greatest machine that never was

Alec Soth + Stacey Baker: This is what enduring love looks like

Adam Garone: Healthier men, one moustache at a time

Aspen Baker: A better way to talk about abortion

Noy Thrupkaew: Human trafficking is all around you. This is how it works

What is a calorie? - Emma Bryce

Everything you think you know about addiction is wrong | Johann Hari | TED

Memory Banda: A Warrior’s Cry Against Child Marriage | TED

History vs. Genghis Khan - Alex Gendler

Latif Nasser: The amazing story of the man who gave us modern pain relief

Jimmy Carter: Why I believe the mistreatment of women is the number one human rights abuse

The surprising thing I learned sailing solo around the world | Dame Ellen MacArthur

Chris Urmson: How a driverless car sees the road

Chip Kidd: The art of first impressions — in design and life

The benefits of a bilingual brain - Mia Nacamulli

Roxane Gay: Confessions of a bad feminist | TED

Steve Silberman: The forgotten history of autism

Lee Mokobe: A powerful poem about what it feels like to be transgender

Do we see reality as it is? | Donald Hoffman | TED

How to detect a supernova - Samantha Kuula

This is what it's like to go undercover in North Korea | Suki Kim

Trevor Aaronson: How this FBI strategy is actually creating US-based terrorists

Laura Schulz: The surprisingly logical minds of babies

The single biggest reason why start-ups succeed | Bill Gross | TED

Jimmy Nelson: Gorgeous portraits of the world's vanishing people

Sara Seager: The search for planets beyond our solar system

Rethinking infidelity ... a talk for anyone who has ever loved | Esther Perel | TED

How batteries work - Adam Jacobson

Cosmin Mihaiu: Physical therapy is boring — play a game instead

Debunking the myths of OCD - Natascha M. Santos

Why city flags may be the worst-designed thing you've never noticed | Roman Mars

The first 21 days of a bee’s life | Anand Varma

The wars that inspired Game of Thrones - Alex Gendler

Tal Danino: We can use bacteria to detect cancer (and maybe treat it)

Bill T. Jones: The dancer, the singer, the cellist ... and a moment of creative magic

Pamela Ronald: The case for engineering our food

What causes economic bubbles? - Prateek Singh

Alice Goffman: How we're priming some kids for college — and others for prison

What is leukemia? - Danilo Allegra and Dania Puggioni