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Putting a lid on methane from cattle
Putting a lid on methane from cattle

The $1.1-trillion omnibus spending bill signed by President Obama contains many giveaways to Wall Street, casinos and the coal industry. But the ones that might do the most severe damage long-term have to do with, of all things, the digestive systems of cattle. Through their manure and, yes, their flatulence, cattle are major producers of methane, a potent greenhouse gas that the public hears much less about than carbon. Methane breaks down much more quickly than carbon — after about 50 years — but during that time, it is 20 to 30 times more potent at trapping heat and is considered the source of a quarter of all global warming. Yet the spending bill specifically barred the...

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