It’s not your imagination, summers have been getting hotter and hotter with extreme heatwaves occurring earlier and more frequently. But why is this happening and can we better predict heatwaves in advance to give people time to prepare? In June of 2021, an unprecedented heatwave shocked the Pacific Northwest and Canada. It ended up being one of the most deadly extreme weather events in the region. But no one could figure out how it occurred, until one Professor of Geophysical Science at the University of Chicago, Noboru Nakamura, saw it as an opportunity to test a new theoretical framework he had developed for understanding atmospheric phenomena. On this episode, we discuss the science of heatwaves, the mystery behind the Pacific Northwest heatwave, and how Nakamura’s framework can be used to better understand and predict climate change and other extreme weather events.