It began in the mid-'90s, when Monsanto developed genetically modified (GM) crops such as soybeans, alfalfa, sugar beets, and wheat. These Frankencrops were immune to its leading weed killer, Roundup. That meant that farmers no longer had to till the land to kill weeds, as they'd done for hundreds of years. They could simply blast their entire fields with chemicals, leaving GM crops the only thing... More >>>