> A cow that's fed on gras and farts emits nothing that that gras didn't pick up Sorry to say, this is a very basic misunderstanding of chemistry. Methane is p

> A cow that's fed on gras and farts emits nothing that that gras didn't pick up Sorry to say, this is a very basic misunderstanding of chemistry. Methane is produced by the cow from carbohydrates in the grass. It is not present in grass, and the grass did not get it from the air. If we stopped producing methane in this way, no other process would replace it and the planet would cool down.