Oceans Turning Acidic Decades Earlier. By Roger Highfield, London Telegraph, May 23, 2008. "Greenhouse gases are turning the oceans acidic enough to dissolve the shells of sea creatures decades earlier than scientists had expected, with potentially catastrophic consequences for marine life. Many marine organisms produce calcium carbonate (chalk) shells but, when the acidity of the water is increased, a point is reached at which that calcium carbonate starts to dissolve. On Thursday an American team published evidence [gathered from Oregon State University research vessel] that this acidic 'tipping point' has been reached on the continental shelf along the west coast of North America, where many delicate organisms live."
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