World

February 2, 2011 4:05 PM

Mexico, cradle of corn, finds its noble grain under assault

Plant specialists describe the native varieties of corn in Mexico as a genetic trove that might prove valuable should extreme weather associated with global warming get out of hand. Corn, one of the most widely grown grains in the world, is a key component of the global food supply. But experts say Mexico's native varieties are themselves under peril — from economics and genetic contamination — potentially depriving humans of a crucial resource.

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