Abstract
Historically, famine has been one of humanity’s greatest threats—it claimed nearly 20–40 million lives in China in 1958-61, killed up to 4 million in 1943 in India, and continues to plague the Sahel region in Africa. On the whole, however, far fewer people live in hunger today than in the past. Thanks to the adoption of mechanization, agrochemicals, and high-yielding crops during the past 50 years, the average per capita calorie intake in the developing world has grown from about 2000 to more than 2,700 calories.
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