Page last updated at 18:57 GMT, Sunday, 15 March 2009

Coral reefs to 'disappear'

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Coral reefs may begin to disappear within 50 years, according to the latest research.

Scientists say carbon dioxide emissions are making seawater more acidic, leading to the death of key coral species.

Dr Richard Feely from the US National Oceanic Administration has spoken of the importance of coral reefs, and says their disappearance is a 'major concern for humanity'.

Roger Harrabin reports from the Red Sea.

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