When will the Earth become uninhabitable?

Artist's vision of a red giant sun. Chris Butler/Science Photo Library/Getty

Earth is our home, but how much longer can it remain so? In this episode of the Stuff to Blow Your Mind podcast, Robert and Christian explore the many threats to terrestrial habitability, from the cosmically distant to the frighteningly close at hand.

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Topics in this Podcast: climate change, environment, future, space, earth, christian sager