On this episode, recorded live at the Jefferson Market Library in New York City, Rationally Speaking podcast celebrates its 100th episode! The show features a full hour of audience Q’s and Julia & Massimo’s A’s. Topics range from science, philosophy and the borderlands between the two. The questions push the hosts to think on their feet, and even to admit their ignorance on stage!

 Sped up the speakers by ['1.09', '1.0']