why is it a problem that it takes so much water to produce 1kg of beef – something like 15,000 liters – if the cows just pee it all back out anyway?
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They count all the rain that falls on the grazing area which makes a large portion of that figure. Most grazing land is not useful for farming. They also use an average, so if a dairy cow lives for several years before becoming beef, they count its whole life. Then they count all the rain and irrigation for the alfalfa and whatnot the cow eats to produce the milk.
The cattle aren’t drinking all that water, it’s basically a bullshit number. Always look at the primary sources. If the real numbers looked like the anti meat people claim, a hamburger would cost 70 dollars
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