> The amount of urine and manure is massive, it's a problem in itself. You can't just dump all that on farms. We make mega-tons of fertilizers, so presumably t

> The amount of urine and manure is massive, it's a problem in itself. You can't just dump all that on farms. We make mega-tons of fertilizers, so presumably this urine/manure can displace some of the fertilizer? At most, this is a question of cost/regulation/externality? > Wildlife does not reproduce at the unsustainable scale that we force cows to do so Well, yeah, true. But maybe u want to go back in time and tell your parents to have one less child? Let hope we find a balance over the next decades