Should we be worried about how many more ruminants this would require, and their impact on the climate? I just saw some estimates of 90 million acres used to grow corn in the U.S., and a cow calf pair needs 1.5-2 acres to feed itself. I know we probably wouldn't maximize cows to the area for the type of growing we're talking about, but that's 45 million cows (with calfs) at the low end if we were, and I'm seeing reports we currently have ~95 million head of cattle in the U.S.

Those are all napkin numbers, or poorly sourced, and worst case, but I would love to see some good numbers on what it means to the climate to have a lot more ruminants in the farming process. (If much of current beef cattle production was moved to be dispersed along these lands, that seems like it might be a good idea for all involved though).