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A new study finds that about 31 million people worldwide live in coastal regions that are “highly vulnerable” to future tropical storms and sea-level rise driven by climate change. In some of those regions, however, powerful defenses are located just offshore. Existing mangroves and coral reefs provide key buffers that could help cushion the blow against future tropical storms and rising waters for about 8.5 million people, according to the study published May 29 in the journal PLOS ONE.
