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Eventually Earth won’t support life at all anymore.

Yeah, but we have like a billion years or so until that happens (e.g. the sun turns red giant and boils the atmosphere away).

Life did pretty well even in the Paleocene-Eocene thermal maximum.

The life that we care about as people is the biosphere that supports people life. I am not being facetious, that's just part of how this conversation works. We have to assume some things are shared knowledge.

Except 50 million years ago we had +10 degrees Celsius increase in temperature and life on the planet was pretty good. We see mass extinctions during ice ages, not during hot spells.

This is left out of nearly every climate debate, which typically goes back in the last few hundred years rather than millions.

Example graph: http://jeremyshiers.com/blog/wp-content/uploads/2014/07/glob...

When I want to use a new material for my fancy microchip fab, I refer to jeremyshiers.com as an authority about why it will work

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