Professor of Atmospheric Sciences at the University of Illinois Urbana-Champaign. Author of multiple IPCC reports, and co-lead for the 4th US National Climate Assessment published under the Trump Administration in 2018. We speak with Don about his emotional journey over almost half a century in atmospheric sciences, about effective climate communication under challenging circumstances, and staying resilient in the face of personal attacks. Don's famous ozone paper: https://www.nature.com/articles/321755a0The latest in lethal heat research: https://www.science.org/doi/10.1126/sciadv.aaw1838Medium Article on responding to trolls: https://medium.com/age-of-awareness/snuff-out-climate-trolls-with-this-one-sentence-it-works-every-time-7bc2d1e6dd4eOrganization mentioned by Patrick: https://climateoutreach.org/