Among the things the astronauts left to lighten the load for the return trips were their “defecation collection devices,” also known as emesis bags (top). So decades-old containers filled with decades-old astronaut turds are still hanging out on the Moon.
In addition to the cool-gross factor, this astro-poop has some scientific and, with the other artifacts up there, cultural value. Some astrobiologists are interested in how bacteria in the abandoned feces have fared, and some anthropologists and historians would like to see the moon landing sites and all the artifacts there protected as part of a World Heritage Site.
The Committee to Nuke Elysium 