Every year, billions of dollars' worth of crops worldwide perish due to pre-harvest sprouting (PHS), a phenomenon in which grain or seeds germinate on the plant before harvest. The process is triggered by a variety of factors, such as warm, moist weather, which can spoil the crop and threaten the global food supply. But this could be a thing of the past, as a team of researchers, primarily from the Carlsberg Research Laboratory in Denmark, has uncovered the genetic mechanism that controls when barley should sprout.