How to topple a dictator - Srdja Popovic

Can democracy exist without trust? - Ivan Krastev

We can recycle plastic - Mike Biddle

The game layer on top of the world - Seth Priebatsch

Sometimes it's good to give up the driver's seat…

Txtng is killing language. JK!!! - John McWhorter

A father-daughter dance ... in prison - Angela…

The day I turned down Tim Berners-Lee - Ian Ritchie

A mini robot -- powered by your phone - Keller…

Life's third act - Jane Fonda

Let's crowdsource the world's goals - Jamie Drummond

How to learn? From mistakes - Diana Laufenberg