Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
302 | Chris Kempes on the Biophysics of Evolution
Chris Kempes
But the point is it's mostly covered in ice and snow. And as an aside, the way that you get out of that is volcanic activity, which keeps pumping CO2 into the atmosphere with no way to take that CO2 up into the ocean and into life. And so then you rewarm the planet through a greenhouse effect, and that pulls you out of snowball Earth.
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