Vegetarian By 2050? You Might Not Have A Choice
"Leading water scientists have issued one of the sternest warnings yet about global food supplies, saying that the world's population may have to switch almost completely to a vegetarian diet over the next 40 years to avoid catastrophic shortages. Humans derive about 20% of their protein from animal-based products now, but this may need to drop to just 5% to feed the extra 2 billion people expe ...
Uploaded:2012/09/01 06:10:18
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Video Source: youtube.com
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