Josh Levs interviews food safety expert Caroline Smith DeWaal about how to protect the nation's food supply.
'Critical' steps to protect U.S. food
http://cnn.com/video/?/video/health/2010/08/26/nr.dewaal.food.safety.cnn
Josh Levs interviews food safety expert Caroline Smith DeWaal about how to protect the nation's food supply.
'Critical' steps to protect U.S. food
http://cnn.com/video/?/video/health/2010/08/26/nr.dewaal.food.safety.cnn