For example, scientists theorize that plants, which live at temperatures far warmer than absolute zero, probably use quantum processes to efficiently convert light into energy. First, plants transform photons, or light particles, into a form of matter called excitons, transporting them to the plant’s chloroplasts to start photosynthesis. During this journey, the excitons must navigate around other internal plant structures—fast enough to preserve their energy all the way to their destination. Scientists suggest that plants must use the quantum property of superposition in order to try all possible paths simultaneously. That way, excitons can arrive at their destination in the most efficient way possible.