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A White Guy posted:The planet won't be inhabitable for 5 billion years. I forget where I read this, but as solar radiation increases over the millenias, the planet will get less and less habitable. The projections were that the planet would stop being habitable within the next billion years, on a timescale that's well beyond the lifespan of our civilization but pretty soon, in galactic terms. The current estimate is 600-800 million years before the sun cooks away enough water to halt plate tectonics and end the recycling portion of the carbon cycle, slowly eroding the ability of plants to photosynthesize. That's plenty of time for a couple more cycles of intelligent life evolving, rampant fossil fuel consumption, overshoot & collapse, and reconstitution into the crust.
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Aug 25, 2016 14:16
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| # ¿ May 17, 2024 17:15 |
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