Want to be happy? Be grateful | David Steindl-Rast

Boyd Varty: What I learned from Nelson Mandela

Krista Donaldson: The $80 prosthetic knee that's changing lives

Never, ever give up | Diana Nyad

I got 99 problems... palsy is just one | Maysoon Zayid

How sugar affects the brain - Nicole Avena

Sheryl Sandberg: So we leaned in ... now what?

Paula Johnson: His and hers ... healthcare

Maya Penn: Meet a young entrepreneur, cartoonist, designer, activist ... | TED

Esta Soler: How we turned the tide on domestic violence (Hint: the Polaroid helped)

Eli the eel: A mysterious migration - James Prosek

Rupal Patel: Synthetic voices, as unique as fingerprints

Why do we cry? The three types of tears - Alex Gendler

History vs. Vladimir Lenin - Alex Gendler

The psychology of your future self | Dan Gilbert

How to make hard choices | Ruth Chang

The danger of silence | Clint Smith | TED

I am the son of a terrorist. Here's how I chose peace | Zak Ebrahim

Haas&Hahn: How painting can transform communities

How autism freed me to be myself | Rosie King

What are those floaty things in your eye? - Michael Mauser

For more tolerance, we need more ... tourism? | Aziz Abu Sarah

Kenneth Shinozuka: My simple invention, designed to keep my grandfather safe

Why sitting is bad for you - Murat Dalkilinç

The price of shame | Monica Lewinsky | TED

What does my headscarf mean to you? | Yassmin Abdel-Magied

Margaret Heffernan: Why it's time to forget the pecking order at work

Steve Silberman: The forgotten history of autism

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

Julian Baggini: Is there a real you?

Rachelle Garniez and Thomas Dolby: "La Vie en Rose"

Feisal Abdul Rauf: Lose your ego, find your compassion

Henry Lin: What we can learn from galaxies far, far away

Street Art for Hope and Peace | eL Seed | TED Talks

How I Stopped the Taliban from Shutting Down My School | Sakena Yacoobi | TED Talks

History through the eyes of the potato - Leo Bear-McGuinness

My year reading a book from every country in the world | Ann Morgan

How New Technology Helps Blind People Explore the World | Chieko Asakawa | TED Talks

Forget Shopping. Soon You'll Download Your New Clothes | Danit Peleg | TED Talks

Robert Waldinger: What makes a good life? Lessons from the longest study on happiness | TED

Have we reached the end of physics? | Harry Cliff

The mysterious world of underwater caves | Jill Heinerth

A simple way to break a bad habit | Judson Brewer | TED

Celeste Headlee: 10 ways to have a better conversation | TED

What the discovery of gravitational waves means | Allan Adams

Is radiation dangerous? - Matt Anticole

The reporting system that sexual assault survivors want | Jessica Ladd

Wisdom from great writers on every year of life | Joshua Prager