The name evokes scenes of hockey players skating on ice, but the so-called “hockey stick graph” is really about the human impact on global warming. USC Dornsife climate scientist Julien Emile-Geay explains how he and other climate scientists worked together to check the data in the hockey stick graph. Their findings appear in the journals Nature and Nature Geoscience. The USC Dornsife College of Letters, Arts & Sciences is the academic heart of the University of Southern California. Learn more at: https://dornsife.usc.edu/