4 environmental ‘heresies’ | Stewart Brand

The man who helped usher in the environmental movement in the 1960s and ’70s has been rethinking his positions on cities, nuclear power, genetic modification and geo-engineering. This talk at the US State Department is a foretaste of his major new book, sure to provoke widespread debate.

A next-gen cure for killer infections | Kary Mullis

Drug-resistant bacteria kills, even in top hospitals. But now tough infections like staph and anthrax may be in for a surprise. Nobel-winning chemist Kary Mullis, who watched a friend die when powerful antibiotics failed, unveils a radical new cure that shows extraordinary promise. NOTE: This talk was given in 2009, and this field of science … Read moreA next-gen cure for killer infections | Kary Mullis