What makes the Great Wall of China so extraordinary - Megan Campisi and Pen-Pen Chen

Why Vaccines are Made Too Late... If They’re Made At All | Seth Berkley | TED Talks

How Quantum Biology Might Explain Life’s Biggest Questions | Jim Al-Khalili | TED Talks

Bring on the learning revolution! | Ken Robinson

A journey through the mind of an artist | Dustin Yellin

The mathematical secrets of Pascal’s triangle - Wajdi Mohamed Ratemi

How to Avoid Surveillance...With Your Phone | Christopher Soghoian | TED Talks

When to use "me", "myself" and "I" - Emma Bryce

Do animals have language? - Michele Bishop

My Inner Life with Asperger's | Alix Generous | TED Talks

The ancient origins of the Olympics - Armand D'Angour

Why do some people go bald? - Sarthak Sinha

Could we actually live on Mars? - Mari Foroutan

A poetic experiment: Walt Whitman, interpreted by three animators - Justin Moore

What happens when continents collide? - Juan D. Carrillo

Could We Cure HIV with Lasers? | Patience Mthunzi | TED Talks

My road trip through the whitest towns in America | Rich Benjamin

Who am I? A philosophical inquiry - Amy Adkins

The surprising way groups like ISIS stay in power | Benedetta Berti

The benefits of good posture - Murat Dalkilinç

Solid, liquid, gas and … plasma? - Michael Murillo

Why humans run the world | Yuval Noah Harari | TED

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

Paper towns and why learning is awesome | John Green

What Islam really says about women | Alaa Murabit

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

Eddy Cartaya: My glacier cave discoveries

Adam Sadowsky: How to engineer a viral music video

Wadah Khanfar: A historic moment in the Arab world

Robert Wright: The evolution of compassion

Robert Thurman: Expanding your circle of compassion

Feisal Abdul Rauf: Lose your ego, find your compassion

James Forbes: Compassion at the dinner table

Dayananda Saraswati: The profound journey of compassion

Jackie Tabick: The balancing act of compassion

Nellie McKay: "Clonie"

Bill Strickland: Rebuilding a neighborhood with beauty, dignity, hope

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

Nora York: Singing "What I Want"

McKenna Pope: Want to be an activist? Start with your toys

Pam Warhurst: How we can eat our landscapes

Bahia Shehab: A thousand times no

Jonathan Eisen: Meet your microbes

Vinay Venkatraman: Technology crafts for the digitally underserved

Daniel Pauly: The ocean's shifting baseline

Marlene Zuk: What we learn from insects’ kinky sex lives

Salvatore Iaconesi: What happened when I open-sourced my brain cancer

Where did English come from? - Claire Bowern