Pratibha L. Gai is Professor and Chair of Electron Microscopy and Director at The York JEOL Nanocentre (Departments of Chemistry and Physics, University of York, United Kingdom).She won L'Oréal-UNESCO Awards for Women in Science for Europe in 2013 for ingeniously modifying her electron microscope so that she was able to observe chemical reactions occurring at surface atoms of catalysts which will help scientists in their development of new medicines or new energy sources.