In the latest of the Special Series on Meat, Grist ask’s: Can meat be sustainable?

foodnews 7.15.2015 rainbowcattle

In any comparison of the environmental impact of meat eaters and plant eaters, we have to start by noting that plant eaters have a powerful ally on their side: physics. Every time energy moves from one state to another, a little is lost along the way. Flip on an incandescent bulb and only 8 percent of the electric energy turns into visible light — the majority of energy is lost as infrared light and heat. Convert the calories in corn into meat by feeding a chicken, and you’ve got the same problem…

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