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Plants' Biological Clock Gene Could Help Feed Planet

Growing enough crops to feed a burgeoning population in a warmer world could depend on a single gene, one that controls the plant's biological clock, according to a new study in the journal Proceedings of the National Academy of Sciences.   "World food supply must increase by 50 to 60 percent by 2050 to feed the population," said Rob McClung, a biologist at Dartmouth College and the study's lead author. "We are worried that the things that we have done to...

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