As Lester Brown details in his latest book, Full Planet, Empty Plates, by 2044, the world population is expected to top 10 billion, and 80 percent of this will be in cities. Increasing poverty and the rise of a global middle class are evolving contemporaneously. Thirty years from now, national security estimates are that the global middle class will grow from 1 billion to 4 billion, mainly in Asia. The middle classes are meat eaters, and meat eaters consume many more calories.
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