What a planet needs to sustain life

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August 12, 2016 Today’s TED Talk What a planet needs to sustain life 13:42 minutes · TEDxBoulder "Venus is too hot, Mars is too cold, and Earth is just right," says planetary scientist Dave Brain. But why? In this pleasantly humorous talk, Brain explores the fascinating science behind what it takes for a planet to host life -- and why humanity may just be in the right place at the right time when it comes to the timeline of life-sustaining planets. Watch now »   Playlist of the Day The lights and sounds of the universe Find out what sound a black hole makes, if (possible) alien life is blocking starlight and other astounding things happening in our galaxy -- and beyond. Watch » 5 talks · Total run time 53:34 NEW ON IDEAS.TED.COM How your microbes influence your love life Science writer Sonia Shah explains why it's really not your fault you're attracted to that terrible person. Read more » Join us on Facebook Follow us @TEDTalks

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