Looking for ET's Flashlight: Optical SETI

Harvard's Paul Horowitz returns with a status report on the All-Sky Optical Search for Extraterrestrial Intelligence, looking for the laser flash that will tell us we are not alone. Bill Nye on choosing a new leader for NASA. Emily Lakdawalla's Q&A is looking for the remnants of Apollo on the moon. Bruce Betts and Mat Kaplan suffer a terrible rocket accident as they explore the night sky and prepare a new space trivia contest.