this post was submitted on 04 Jul 2024
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Why would all life perish? From what I've heard and read about nuclear disaster exclusion zones, humans disappearing tends to make space for other forms of life that had previously been displaced by cities full of humans and such. To my understanding long time life probably won't care about anything for the next few million years.
Short term many or most humans might die or suffer. I don't think it's easy to predict how fragile humankind is, civilization may crumble. I doubt all of humankind will be gone in a thousand years, though I wouldn't bet against a semi "post apocalyptic" future.
All life wouldn't perish, the only things that will be left will be certain bacteria, phagocytes and viruses that can tolerate and indeed will likely proliferate in extreme environments. Everything larger then that will die of starvation due to a cascade of failing systems, likely starting with the death of the marine biosphere when the temperature rises to unsustainable levels and/or the pH lowers too much for the same effect. Though of course no one really knows what will actually happen because there are too many unknown variables.
There is absolutely, unequivocally, no evidence that this will happen and no serious scientific prediction that this will happen from climate change has ever been made.
The science illiteracy here is getting almost as bad as the right wingers.
I may have stated it slightly too strongly but this is wild speculation on Hansen’s part. Show me a published prediction.
Even if what he said was accurate, burning that much fossil energy is almost certainly impossible.