Un monde post-apocalyptique, sans les humains ressemble à une histoire de science fiction. Mais dans cette conférence TED, Sir Martin Rees réfléchit aux risques existentiels - naturels ou menace créée par l'homme -  qui pourraient anéantir l'humanité. En tant que membre du genre humain, il pose la question : que peut-il arriver de pire ?

Peut-on éviter l'apocalypse ?

For the first time in 45 million centuries, one species has the power to control the Earth’s future. Catastrophic threats once came from nature, but now the gravest dangers are human-made, from runaway biotechnology to global network failures. Even a one-in-a-billion chance of human extinction is too much when billions of years of potential lie ahead. As technology races forward, society must urgently confront and guard against existential risks.

Humanity Now Holds the Planet’s Fate—and Risks Its Own Extinction