Drugs, explosions, heart break, and nudity - this episode had it all! (Don't worry, it's still clean.) Today we discuss Polymerase Chain Reaction - PCR - and the people behind this technology. Join us as we talk about Thomas Brock's serendipitous discovery in Yellowstone National Park, and Kary Mullis's midnight revelation (while he may or may not have been trippin') that led to a Nobel Prize.