UW researchers, Lei Geng, Qiang Fu, and Becky Alexander published a study in the journal Nature that shows during large climate swings, oxidants shift in a opposite direction than researchers had expected, which means they need to rethink what controls these chemicals in our air. In their study, they analyzed slices from a Greenland ice core in the UW’s isotope chemistry lab. A new method was created to get a read on changes in the atmospheric oxidants.