Climate-Related Death of Coral Around World Alarms Scientists

Researchers believe that bleaching, which they attribute to heat stress compounded by climate change, is threatening more than a third of the planet’s reefs.

10CORAL-master675SYDNEY, Australia — Kim Cobb, a marine scientist at the Georgia Institute of Technology, expected the coral to be damaged when she plunged into the deep blue waters off Kiritimati Island, a remote atoll near the center of the Pacific Ocean. Still, she was stunned by what she saw as she descended some 30 feet to the rim of a coral outcropping.

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