Scientists have been trying to understand the detailed mechanism of photosynthesis for decades. Now, scientists have finally unlocked the mystery of photosynthesis by focusing on the initial, ultrafast events through which photosynthetic proteins capture light and use it to initiate a series of electron transfer reactions. This has enabled scientists to design electron transfer systems and provided the ability to harness the flow of energy that could be used to improve human-made devices such as solar panels and sensors.