That's right that cow farts don't contribute anything to climate change. Some sources quote the methane cattle emit as if it was significant but it isn't becaus

That's right that cow farts don't contribute anything to climate change. Some sources quote the methane cattle emit as if it was significant but it isn't because the environment can handle it. In truth, the emissions from farming that the environment can't handle come from "land use change". That's the land that's deforested and turned into cropland to feed cattle. But that's a big problem and not one to be underestimated. We are tearing down the ability of the environment to capture carbon, one hectare of forest, let alone rainforest, at a time. That has to stop. And that means cutting down on meat production. That's not to say we should stop producing and eating meat. That'd be just risking malnutrition on a planetary scale. I'm also not sure about the bit where you say "hominids have adapted to digest almost exlusively for millions of years", where you mean meat. We're omnivorers and we are "adapted" to an omnivore diet: a little bit of everything. Eating only meat is as braindead as eating only plants. We need a balanced diet to stay healthy.