ALT "John M. Wallace,known as Mike to his friends, is one of the giants in atmospheric sciences. He's a member of the U.S. National Academy of Sciences, and every atmospheric scientist has read his textbook, co-written with the late Peter Hobbs. In this post, originally published on Andy Revkin's Sustain What substack, Mike describes how his thinking about climate change has evolved—from initial doubt to genuine concern. This transformation is the hallmark of a true scientist: someone whose views follow the evidence rather than the other way around (e.g., the DOE CWG report). I also recommend listening to Adam Sobel's Deep Convection podcast interview with Kerry Emanuel, who underwent a similar transformation: https://deep-convection.org/2020/02/22/episode-2-kerry-emanuel/."