A fresh biography of Galileo Galilei which puts his scientific discoveries in context. Disturbed by rampant science denial in America that has only intensified in recent years, I researched the life, ideas, and actions of this brilliant man who encountered similar challenges centuries ago. The result is a fascinating biography filled with lessons relevant for today—whether with respect to the COVID-19 pandemic or climate change. I will discuss a few of these topics in this talk. My book GALILEO and the Science Deniers was selected by The Washington Post as one of the best books of 2020.