26th August 2014

Can we prevent the end of the world?

A post-apocalyptic Earth, emptied of humans, seems like the stuff of science fiction. But in this short, surprising talk, Lord Martin Rees asks us to think about our real existential risks — natural and human-made threats that could wipe out humanity. As a concerned member of the human race, he asks: what’s the worst thing that could possibly happen?

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