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Originally Posted by Fuzz
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I always assumed that the inputs such as transport and fertilizer emissions were the only things to worry about. The flatulence emissions story always seemed fishy. If a free range cow on natural gas lands is eating grass, it seems logical that this cow would be carbon neutral. By eating grass a portion of the grass and their feces is going to be burried in the ground. The flatulence they are creating is coming from grass which is absorbing carbon as it grows. The carbon inputs here are coming from the farming inputs, not the animals themselves.
Just measuring a cows farts for carbon output anyways seemed ridiculous.
If you're buying beef from a factory farm in new Zealand, it's obviously an entirely different matter.