The report called Global Tipping Points has been prepared by 160 researchers to synthesise groundbreaking climate science, ahead of the COP30 meeting in Brazil in November.
There are positive signs when it comes to phasing out the fossil fuels most responsible for climate change, with renewables now accounting for more electricity generation than coal this year for the first time.
For corals to recover, the world would need to drastically ramp up climate action to reverse temperatures back down to just one degree above the pre-industrial average.
Andrea Rivera Sosa says coral reefs can be restored through technology, with techniques that include young coral being taken from the wild able to be grown in a lab and replanted later.
But she says that is no substitute for stronger regulations on reducing greenhouse gas emissions.
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