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Dams Cause Greenhouse Gas Emissions

According to a study done by the National Institute for Space Research, India's 4,500 dams (third highest behind the US and China) "emit an amount of methane that is equivalent to 850 million tons of carbon dioxide per year." It seems both carbon dioxide and methane are "released from the decaying vegetation of spillways, reservoirs and turbines of hydropower dams, but methane is twenty-three times more formidable in trapping heat than carbon dioxide."

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