An expert told 'Newsweek': 'The planet will transition into a different state, possibly with some other life forms coming to dominate, or possibly with some surviving humans creating a different civilisation.'
If we reach a stage where tipping points can't be ruled out,"this is an existential threat to civilization," they warned."No amount of economic cost-benefit analysis is going to help us. We need to change our approach to the climate problem."
"Abrupt and irreversible changes in the climate system have become a higher risk at lower global average temperatures," they warned.tipping points are dangerously close, but mitigating greenhouse-gas emissions could still slow down the inevitable accumulation of impacts and help us to adapt." If this area collapses, the remaining West Antarctic ice sheets could be destabilized,"leading to about 3 meters [9.8 feet] of sea-level rise on a timescale of centuries to," according to a prediction cited by the authors. The Wilkes Basin on the East Antarctic could face a similar fate, and the Greenland ice sheet could be"doomed" at 1.5 C of warming as soon as 2030.
More research is needed to confirm whether ice sheets are heading towards tipping points. But action must be taken to slow sea-level rises for us to adapt to climate change regardless, they said.Elsewhere, ocean heatwaves have caused mass coral bleaching, and the loss of half of shallow-water coral on the Great Barrier Reef in Australia. If average global temperatures spike by 2 C, 99 percent of tropical coral could be lost.
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