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Leading water scientists warn that in order to avoid catastrophic food shortages, the world’s population may have to switch over to a completely vegetarian diet over the next 40 years in order to feed the growing population by 2020. Keep in mind, it takes a staggering 1,800 gallons of water to make a pound of grain-fed beef. http://www.guardian.co.uk/global-development/2012/aug/26/food-shortages-world-vegetarianism
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