Why waste agricultural effort on growing feed for animals when we can simply feed ourselves?
That's the most simple premise behind the environmental case for veganism. But that equation gets a bit more complicated when animals don't eat food fit for humans—but rather turn resources we couldn't otherwise eat, whether it's trash or grass, into a high-value protein for human consumption.
That's why this video from permaculture legend Geoff Lawton is so interesting. There are plenty of farming operations that feed their chickens from a mix of food waste, forage and grain—but there can't be many that have eliminated grain purchases entirely.
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