ClimateWire: A carbon dioxide-rich atmosphere could strip important food crops of their nutrients, a new study suggests.
Wheat, rice, barley and certain legumes like soybeans are classified as C3 plants, which corresponds to their ability as plants to convert carbon dioxide into energy. These C3 grasses and legumes have been shown to lose up to 15 percent of zinc and iron, the top two minerals in the human body, in experiments that artificially enhanced the concentration of carbon dioxide. These elements are...