> We need to go back to our old style of farming before the world wars where we rotated between crops and animals and used the animals dung as fertiliser. You

> We need to go back to our old style of farming before the world wars where we rotated between crops and animals and used the animals dung as fertiliser. You mean, the old style of farming where our agricultural output was sustained by unimaginable tons of ancient manures looted from South America? We are already using ~all available animal dung as fertilizer; it provides something like 10% of our global fertilizer needs. We can't produce more animal dung than we are now; we already raise an absurd quantity of livestock, and we especially can't do it while also doing the other thing people suggest on this topic, cutting our meat production by 90%.