Eben Upton: Raspberry Pi

Eben Upton founder of the Raspberry Pi Foundation, shows how he is hooking a new generation of kids on computer programming. “I remember sitting down with my wife for dinner…and we had this sudden, appalling realization that we had promised 600,000 people that we would build them a $25 dollar computer.”

John Thackara: The end of endless growth

Social critic John Thackara argues that the current human paradigm of endless growth is obviously unsustainable, so we should consider the brilliance of the Brazilian Jequitiba tree, which soaks up four tons of water a day. “I am a proper tree hugger, as well as a lichen hugger.”