Terraform
Ever since life emerged, microbes, plants and animals have all sculpted the planet's surface and atmosphere in the strangest of ways: fish poop creates islands; dead animals create mountains; and plants help create continents.
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From rocks to rivers, life has crafted everything that makes our planet so special. But this power of change brings with it profound dangers. Life doesn't just create. It can also destroy. Astronaut host – Mike Massimino.
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