Making sense of string theory | Brian Greene

Militant atheism | Richard Dawkins

New thinking on the climate crisis | Al Gore

Underwater astonishments | David Gallo

Daniel Goleman: Why arent we all Good Samaritans?

William Kamkwamba: How I built a windmill

Jennifer Lin: Improvising on piano, aged 14

Why are we happy? Why aren't we happy? | Dan Gilbert

Hans Rosling: Debunking third-world myths with the best stats you've ever seen

Do schools kill creativity? | Sir Ken Robinson | TED

Secrets of success in 8 words, 3 minutes | Richard St. John