Ideas worth spreading

Is this our final century?

3,081,361 views | Martin Rees • TEDGlobal 2005

Speaking as both an astronomer and "a concerned member of the human race," Sir Martin Rees examines our planet and its future from a cosmic perspective. He urges action to prevent dark consequences from our scientific and technological development.

Speaking as both an astronomer and "a concerned member of the human race," Sir Martin Rees examines our planet and its future from a cosmic perspective. He urges action to prevent dark consequences from our scientific and technological development.

This talk was presented at an official TED conference. TED's editors chose to feature it for you.

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Martin Rees

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Lord Martin Rees, one of the world's most eminent astronomers, is an emeritus professor of cosmology and astrophysics at the University of Cambridge and the UK's Astronomer Royal. He is one of our key thinkers on the future of humanity in the cosmos.

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This talk was presented at an official TED conference. TED's editors chose to feature it for you.