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Originally Posted by tecoyah
OK...so we pretty much discounted the solar cycle, cosmic rays, and volcanism as the primary sources of increased CO2 in the atmosphere....shall we try Cow Farts?
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Actually, cow farts are a very significant source of methane emissions. Control methods are being developed, including feed that causes them to fart less.
Humans are responsible for the cow farts because we wouldn't have so many cows if they weren't so tasty.