The Food Guys, Jon Jackson and Greg Patent, discuss the 2018 book, Pandora's Potatoes: The Worst GMOs , by Caius Rommens, former director of biotech research and development at the potato processing and marketing company, J.R. Simplot. Rommens, a genetic engineer, developed Simplot's genetically-modified potatoes, which were approved for commercial planting in the U.S. in 2014.