It's a dark moment for science literacy when the consequences of ignorance have never been higher. If only we had a popular media figure who taught us the wonders of physics, marine biology, math, astronomy, paleontology without pulling our teeth! Bill Nye recalls studying with Carl Sagan, attacks bastions of ignorance, examines evidence of global warming, debates climate deniers, and advocates for solar sails with his trademark manic SCIENCE!!! enthusiasm—and some behind-the-scenes anxiety and fatigue.