Agence France-Presse: A period of intense, natural changes in climate caused coral reefs in the eastern Pacific to shut down thousands of years ago, and human-induced pollution could worsen the trend in the future, scientists said Thursday. The study in the US journal Science points to sea temperature fluctuations -- brought on by the same phenomenon that causes El Nino and La Nina events every several years -- as the main cause for the coral die-off near the Panama coast. The reef shutdown began 4,000 years ago...
URL: http://www.google.com/hostednews/afp/article/ALeqM5jQVsi01BvQX8MSP_RKk9-0OHts8A?docId=CNG.f8866013158cafd9502d8a9b38f83e6e.131
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