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Shamino79 t1_j284r3m wrote

To drive ourselves to extinction we would pretty much have to blow up the planet. Possibly we’re back to bugs or fish or microbes. Won’t be monkeys or cats or something with a brain and it won’t really have to evolve to take over. Just survive. And I guess there’s a chance nothing would evolve to reach our level again.

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thunderchungus1999 t1_j28lwjm wrote

IIRC Earth has still 400 million years left on the clock before multicellular life becomes unsustainable due to the increase in heat and radiation incoming from the expanding red sun.

It took 1000 million years for life to evolve from single celled life into ocean-dwelling fish and early amphibians.

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