By 2100, we could be heading towards a loss of life in our oceans that rivals some of the largest extinction events in Earth's history – if we don't continue to tackle the climate catastrophe, new modeling warns.
emissions and prevent the magnitude of warming that would cause this mass extinction."
They calculated that if we manage to limit warming to 2 °C by 2100 we can reduce species extinctions by more than 70 percent than the worst case scenario . Even limiting warming to 2.6 °C would keep the impact of climate change on our oceans to less than more direct threats. But these scenarios require us to actually make some massive changes.
Luckily, we're currently on track to avoid the worst-case scenario with current mitigation policies andAs with any model of complex systems, there remain a lot of uncertainties – such as how much habitat a marine species can lose on average before it goes extinct. The model also only uses physiological data from a dozen species to represent marine life, so adding to that would increase the model's accuracy.
But given that it accurately explained the data from the fossil record when the team used it to model the Great Dying, and the catastrophes we're already witnessing, its overall message stacks up. It's clear that to keep the liquid world that envelopes 70 percent of our planet thriving with life, we must tackle both the immediate threats it faces from us, from pollution to overfishing, as well as the greater threat we pose through human-caused climate change.
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