> I've read this a few times and I keep reading it the same way "We produce waste that can be used to feed animals as a bitproduct of producing feed for animals

> I've read this a few times and I keep reading it the same way "We produce waste that can be used to feed animals as a bitproduct of producing feed for animals? My point is that we don't need to produce feed for animals, they do fine just on pastureland. The way we currently raise grains is problematic enough as it is, requiring huge fertilizer inputs[1] which require petrochemicals. Eating grains is not a sustainable alternative - if we raised grains for human food, might as well feed animals and get some steaks out of it. >And tons more cleared grassland. The great plains did not need to be cleared. They were perfect pastures for grazing animals, not the modern monoculture of grains. [1] (we're running out of phosphorous http://blogs.ei.columbia.edu/2013/04/01/phosphorus-essential-to-life-are-we-running-out/ http://blogs.ei.columbia.edu/2013/04/01/phosphorus-essential...)