^* Astronaut specimens from the Skylab and Apollo eras are still around, in freezers on the top floor of a windowless high-security building at Houston’s Johnson Space Center—the one that houses NASA’s collection of (non-biological) moon rocks. “I am not sure what our inventory of excreta from Apollo is right now,” John Charles told me. “Forty years of freezing, with occasional thaws due to power outages during hurricanes, may have reduced them to mere vestiges of their former glory.” They were there as of 1996, because planetary geologist Ralph Harvey stumbled onto them when he got lost taking a group of VIPs on a tour. “Back then all the doors opened to the same code,” he recalls. “I opened this one door and it was almost like the scene from Raiders of the Lost Ark. There were these rows of long, low freezers. They all had a little light on them that’s blinking, and a temperature readout, and a piece of tape with the astronaut’s name. I’m like, Shit, they stored the astronauts in here! and I quickly got the people out. I found out later that was where they stored the astronaut feces and urine.” Harvey can’t recall the room number. “You have to stumble onto it, that’s the only way you can find it. It’s like Narnia.”