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'Dead corals don't make babies': Great Barrier Reef losing its ability to recover from bleaching

(CNN)Successive ocean heat waves are not only damaging Australia's Great Barrier Reef, they are compromising its ability to recover, raising the risk of "widespread ecological collapse," a new study has found.The 2,300-kilometer-long (1,500 mile) reef has endured multiple large-scale "bleaching" events caused by above-average water temperatures in the last two decades, including two back-to-back occurrences in 2016 and 2017.The new study, released Wednesday in the journal Nature, examined the number of adult corals which survived these two events and how many new corals they created to replenish the reef in 2018. The answer was as bleak as it was stark: "Dead corals don't make babies," the study's lead author, Terry Hughes, said in a press ...
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