Genetically modified organisms (GMOs) are also sparking hot debate these days. GMOs are plants that have genes from other plant species or even animals inserted into their makeup to make them tastier, more nutritious, faster growing, or resistant to bugs and weeds on the farm. Basically, it's like pumping a dog with horse genes to make Rover run faster. Some say these improved traits are awesome and can help meet the world's food demands; others argue that messing with DNA is dangerous and who knows what health or environmental consequences these "Frankenfoods" could have.

GMO opponents want these foods to be labeled so consumers can choose whether they want them or not. California, Washington, and a few other states have introduced bills that would mandate GMO labeling, but in the meantime, the nonprofit Non-GMO Project certifies foods that do not contain these ingredients. Technically, USDA Organic foods already don't contain GMOs, but the Non-GMO Project Verified seal gives added assurance.