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Page last updated at 09:19 GMT, Tuesday, 26 January 2010

Oceans 'under new threat'

Scientists are warning of the dangers of ocean acidification which is beginning to have an impact on the fundamental biology of marine ecosystems. In the 250 years since the start of the industrial revolution the acidity of the seas has increased by 30 percent.

Science correspondent Tom Feilden reports on an issue biologists have dubbed the "elephant in the corner" of the climate change debate.


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