Climate Change Assaulting Global Food Supply

Climate Change Assaulting Global Food Supply
Drought damaged corn is seen as President Barack Obama and Agriculture Secretary Tom Vilsack tour the McIntosh farm , Monday, Aug. 13, 2012, in Missouri Valley, Iowa, during a three day campaign bus tour through Iowa. (AP Photo/Carolyn Kaster)
Drought damaged corn is seen as President Barack Obama and Agriculture Secretary Tom Vilsack tour the McIntosh farm , Monday, Aug. 13, 2012, in Missouri Valley, Iowa, during a three day campaign bus tour through Iowa. (AP Photo/Carolyn Kaster)

American eaters, let's talk about the birds and the bees: The U.S. food supply - from chickens injected with arsenic to dying bee colonies - is under unprecedented siege from a blitz of man-made hazards, meaning some of your favorite treats someday may vanish from your plate, experts say.

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