Ben Santer was an early contributor to the historic 1995 Intergovernmental Panel on Climate Change when a group of leading climate scientists first declared that “the balance of evidence suggests a discernible human influence on global climate”.  Santer was a lead author of a key chapter of that report – chapter 8 – which ⁠Santer spoke about recently in a talk given at the University of Utah⁠. Santer has done a lot of groundbreaking work to identify human fingerprints in atmospheric temperature and water vapor, ocean heat content, sea surface temperature in hurricane formation regions, and many other climate variables.  In this episode, Santer shares four lessons he has learned in the course of his career as a climate scientist.