The University of California, Berkeley recently found 20 vials of Moon dust in an archival warehouse. Apparently, these were all loaned research samples that should have been returned to NASA more than 40 years ago. This is not the only institution to suffer from the same problem. At least 12 states had (and then lost) collections of small Moon rocks. Minnesota found theirs last year in a display case at the state Veteran Services Building, crowded into a cluster of lesser memorabilia, including an 8th-place award in a shooting competition. It could happen to anybody.