It's not just about climate change anymore. Besides loading the atmosphere with heat-trapping greenhouse gases, human emissions of carbon dioxide have also begun to alter the chemistry of the ocean--often called the cradle of life on Earth.
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Great Barrier Reef off Australia.
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The ecological and economic consequences are difficult to predict but possibly calamitous, warn a team of chemical oceanographers in the July 4 issue of
Science, and halting the changes already underway will likely require even steeper cuts in carbon emissions than those currently proposed to curb climate change.