23 Sep '11, 8pm

Earth is having a bad acid trip, study finds

Earth is having a bad acid trip, study finds

Each of these activities contributes to rising acidity in its own way, the study's authors explain. Much of the CO2 emissions from coal burning are absorbed by ocean water, for instance, producing carbonic acid that wreaks havoc with marine food webs. SO2 from both coal burning and metal smelting leads to acid rain, which in turn acidifies soil and freshwater and can directly kill plants. Drainage from coal mines also boosts acidity in soil, freshwater and groundwater, while nitrogen added to farmland can reduce soil pH over time, limiting its ability to sustain crops.

Full article: http://www.mnn.com/earth-matters/wilderness-resources/blo...

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