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    If coral reefs disappear, so will they

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If coral reefs disappear, so will they

Coral reefs may not survive the century because of global warming. CNN columnist John Sutter travels to Madagascar, where a village depends on reefs for survival.

If coral reefs disappear, so will they

Coral reefs may not survive the century because of global warming. CNN columnist John Sutter travels to Madagascar, where a village depends on reefs for survival.