Plants spend all day creating food from sunlight using photosynthesis—a 100+ step process that researchers have been working to improve its efficiency in crops to ultimately deliver more yield. When crop leaves are in full sunlight, such as in the wide-open fields, their green chlorophyll molecules receive more light energy than they can use. If this energy isn't dissipated from the molecules, they will react with oxygen to produce bleaching agents that can destroy the leaf, costing plants up to 10–30% of their ability to photosynthesize.