TED Talks
Dave Brain: What a planet needs to sustain life
TV-PG
2016 • E150 Aug 12, 2016 15m"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.
