You probably wear it every day, but do you think about where it comes from? We're talking about cotton, not your Puffy AmiYumi backpack. While it's one of consumers' favorite fabrics, its cultivation is destructive to land and people. Some advocates are pushing for a shift to organic cotton farming, but they say competition from other countries is making it economically tough. At the same time, GM crops are muscling their way onto the scene. Will lighter-weight sustainability goals fill the gap? Jason Mark weaves the story of the U.S. organic cotton industry.