Learning English—How to learn ENGLISH SPEAKING—Learning English with movies | Rachel’s English

Never, ever give up | Diana Nyad

Peter Attia: What if we're wrong about diabetes?

Peter Singer: The why and how of effective altruism

Misha Glenny: Hire the hackers!

Mikko Hypponen: Fighting viruses, defending the net

Patrick Awuah: Educating a new generation of African leaders

Nick Bostrom: Humanity's biggest problems aren't what you think they are