Roger Pielke Jr., a professor at the University of Colorado, comes back on the podcast for a second time. In this episode, he talks about the “catastrophe bias” in the latest IPCC report, the media coverage of the report, the need for more “robust science advice” in policymaking, why America’s reaction to Covid-19 was the “biggest policy failure” in modern U.S. history, the Olympics, the suspension of sprinter Sha’Carri Richardson, and the “intersection of expertise and democracy.”