The world's ice sheets are on course for runaway melting, leading to multiple feet of sea level rise and "catastrophic" migration away from coastlines, even if the world pulls off the miraculous and keeps global warming to within 1.5 degrees Celsius, according to new research.
A group of international scientists set out to establish what a "safe limit" of warming would be for the survival of the Greenland and Antarctic ice sheets. They pored over studies that took data from satellites, climate models and evidence from the past, from things like ice cores, deep-sea sediments and even octopus DNA.
What they found painted a dire picture.
The world has pledged to restrict global warming to 1.5 degrees Celsius above pre-industrial levels to stave off the most catastrophic impacts of climate change.
However, not only is this limit speeding out of reach — the world is currently on track for up to 2.9 degrees of warming by 2100. But the most alarming finding of the study, published Tuesday in the journal Communications Earth and Environment, is that 1.5 might not even be good enough to save the ice sheets.
Even if the world sustains today's level of warming, at 1.2 degrees, it could still trigger rapid ice sheet retreat and catastrophic sea level rise, the scientists found.
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📷: Sebnem Coskun/Anadolu Agency/Getty Images; Mario Tama/Getty Images
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