It's been nearly 40 years since anyone has set foot on the moon, but Joseph Gutheniz is still chasing after pieces of it. The retired NASA investigator has the unofficial title "moon rock hunter," and has been hunting down the whereabouts of nearly 400 pieces of the moon that have gone lost while in the care of various governments around the world. The Los Angeles Times has a profile on Gutheniz in which he discusses how he's lured in moon rock sellers, his current battle to retrieve a rock given to Alaska, and a few pieces that are his white whales of lunar artifacts.