Source: ScienceDaily 
April 1, 2012
"Corals may be better placed to cope with the gradual acidification of the world's oceans than previously thought -- giving rise to hopes that coral reefs might escape climatic devastation.
In new research published in the journal Nature Climate Change, an international scientific team has identified a powerful internal mechanism that could enable some corals and their symbiotic algae to counter the adverse impact of a more acidic ocean.
As humans release ever-larger amounts of carbon dioxide into the atmosphere, besides warming the planet, the gas is also turning the world's oceans more acidic -- at rates thought to far exceed those seen during past major extinctions of life. This has prompted strong scientific interest in finding out which species are most vulnerable, and which can handle the changed conditions."
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