Michael Pollan's take on Joel Salatin's Polyface Farm:
"[Polyface's animal rotation] is not a zero sum system...a truly sustainable system can actually improve the soil, improve biodiversity, leave the land better than before we removed our food from it."
at end of video
https://www.youtube.com/watch?v=gAHGbbjenhI
Michael Pollan author of The Omnivore's Dilemma featured in the documentary Food, Inc.
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