Photograph of beekeepers in Mexico, taken by National Geographic's Nadia Shira Cohen

Maya beekeepers in the Mexican state of Campeche say their bees are dying and honey harvests have declined since the expanding Old Colony Mennonite communities started planting genetically modified soy. Mennonites, who are the state's main soy producers, arrived in the late 1980s in search of farmland. Nadia Shira Cohen has documented the events for National Geographic.