Berkeley Lab’s Bill Collins, an internationally recognized expert in climate modeling and climate change science, discusses what we know about climate change, how we know it, and what we can do about it. Collins serves as the director for the Climate and Ecosystem Sciences Division at Berkeley Lab. He is also the director of the Climate Readiness Institute, a multi-campus initiative to prepare the Bay Area for climate change. For more information and to see past Science at the Theater events visit Friends of Berkeley Lab at friends.lbl.gov/ This Science at the Theater event took place March 24th, 2016.