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The massive amount of CO2 we’re pumping into the atmosphere isn’t just warming the climate — a quarter of it ends up in the oceans, where it works to lower the waters’ pH level. The oceans have become 30 percent more acidic over the past 200 years as a result of human activity, a phenomenon that’s already harming coral reefs, dissolving the shells of sea snails, an important part of the marine food chain, and threatening fisheries.
full: http://www.salon.com/2014/11/11/look_what_weve_done_to_the_worlds_oceans/
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