Kraft Foods, Kellogg's and other U.S. food producers come under attack as demand for vegetable oil made from palm trees soars.
What do Oreo cookies made by Nabisco (KFT, Fortune 500), Cheez-It crackers from Kellogg's (K, Fortune 500) or General Mills' (GIS, Fortune 500) Fiber One Chewy Bars have to do with global warming and the destruction of tropical rainforests? A lot, say environmental activists.