Speaking of GMO-related lawsuits against PepsiCo, I wrote last December about how the company is being sued over several Frito-Lay snack products labeled ???natural,??? despite containing genetically-modified corn and vegetable oils, including corn, soybean and canola oils. (That case was re-filed earlier this year.) In 2010, Frito-Lay announced that half of its products would be made of ???all-na