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* Note that email recipients will see only the first couple of sentences of subscriber-only stories unless they're subscribers.GLOBAL WARMING
Against the Grain
Supplies of rice, corn, and wheat--crops that yield half of the world's food calories--could shrink dramatically by 2050.
Global warming poses mounting threats to the world's crops. Supplies of rice, corn, and wheat could shrink dramatically. Yet the money the U.S. government devotes to researching global warming's impact on agriculture has shrunk dramatically in recent years.
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