In this edition we find out how the synchrotron can be used to understand and clean up our environment. We investigate a new form of solar cell, using plastics, which could make solar power more accessible as well as find out the use of microbes to clean up arsenic contaminated groundwater. We also discover an alternative form of rust which could prove useful in the fight against nuclear contamination and reveal a biological side to weathering! All that plus the latest news and events from Diamond including the unveiling of the world's largest diffraction pattern!