Photosystem II (IMAGE) DOE/SLAC National Accelerator Laboratory Caption A new technique allows scientists to map how electrons flow in the oxygen-evolving complex of Photosystem II. The ultimate goal is to assemble an atomic movie of the entire process, including the elusive transient state that bonds oxygen atoms from two water molecules to form oxygen molecules. Credit Greg Stewart/SLAC National Accelerator Laboratory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.