A 4th global coral bleaching event is underway, say experts

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54% of the ocean has faced bleaching-level heat stress in the past year, say scientists and that figure is rising by 1% every week. It’s impacting every major ocean basin and triggering mass bleaching throughout the tropics, as well as at Australia’s Great Barrier Reef and the Red Sea. The world has suffered 3 major coral bleaching events in the past

But this is the second in a decade.