Hubertus Knabe: The dark secrets of a surveillance state

Margaret Gould Stewart: How giant websites design for you (and a billion others, too)

An ultra-low-cost college degree | Shai Reshef

How playing an instrument benefits your brain - Anita Collins

Ze Frank: Are you human?

Shih Chieh Huang: Sculptures that'd be at home at the bottom of the ocean

Nikolai Begg: A tool to fix one of the most dangerous moments in surgery

The many meanings of Michelangelo's Statue of David - James Earle

How do you explain consciousness? | David Chalmers

David Kwong: Two nerdy obsessions meet — and it's magic

Karima Bennoune: The side of terrorism that doesn't make headlines

What makes tattoos permanent? - Claudia Aguirre

Renata Salecl: Our unhealthy obsession with choice

Paul Bloom: Can prejudice ever be a good thing?

Which country does the most good for the world? | Simon Anholt

Sara Lewis: The loves and lies of fireflies

How to Speak So That People Want to Listen | Julian Treasure | TED

Naomi Oreskes: Why we should trust scientists

Attack of the killer algae - Eric Noel Muñoz

Shaka Senghor: Why your worst deeds don't define you | TED

What gives a dollar bill its value? - Doug Levinson

Billy Collins: Two poems about what dogs think (probably)

Jamila Lyiscott: 3 ways to speak English | TED

Why aren't we only using solar power? - Alexandros George Charalambides

How to make hard choices | Ruth Chang

Anne Curzan: What makes a word "real"?

Kwame Anthony Appiah: Is religion good or bad? (This is a trick question)

The world's largest family reunion ... we're all invited! | A.J. Jacobs

Uri Alon: Why truly innovative science demands a leap into the unknown

Will Potter: The shocking move to criminalize nonviolent protest

Hackers: the internet's immune system | Keren Elazari

Why do honeybees love hexagons? - Zack Patterson and Andy Peterson

I'm not your inspiration, thank you very much | Stella Young

Robert Full: The secrets of nature's grossest creatures, channeled into robots

How to choose your news - Damon Brown

Stephen Burt: Why people need poetry

The psychology of your future self | Dan Gilbert

Ray Kurzweil: Get ready for hybrid thinking

Sting: How I started writing songs again

Stephen Friend: The hunt for "unexpected genetic heroes"

A glimpse of life on the road | Kitra Cahana

The strange story of the teddy bear and what it reveals | Jon Mooallem

How languages evolve - Alex Gendler

Sebastian Junger: Why veterans miss war

Wes Moore: How to talk to veterans about the war

Chris Kluwe: How augmented reality will change sports ... and build empathy

How the worst moments in our lives make us who we are | Andrew Solomon

Jackie Savitz: Save the oceans, feed the world!