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Cereal Killer: Climate Change Stunts Growth of Global Crop Yields

The people of the world get 75 percent of their sustenance--either directly, or indirectly as meat--from four crops: maize (corn), wheat, rice and soybeans. The world's rising population--now predicted by the United Nations to reach 10.1 billion by century's end --has been fed thanks to rising yields of all four of these crops during the past century.

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