Manmade Global Warming - New Extremes, page-9025

Man Made CO2

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How long will Earth be habitable for humans?
Roughly 1.3 billion years from now, "humans will not be able to physiologically survive, in nature, on Earth" due to sustained hot and humid conditions. In about 2 billion years, the oceans may evaporate when the sun's luminosity is nearly 20% more than it is now, Kopparapu said.3 Dec 2023