More than a quarter of coral reefs are gone - report
More than one-quarter of the world's coral reefs have been lost to global warming, pollution, fishing activity and other sources of stress, and 70 percent could be dead within 50 years, the US
More than one-quarter of the world's coral reefs have been lost to global warming, pollution, fishing activity and other sources of stress, and 70 percent could be dead within 50 years, the US