"Kids do the darndest things, but not, apparently, nuclear physics. The toy was only sold for one year. It's unclear what effects the Uranium-bearing ores might have had on those few lucky children who received the set, but exposure to the same isotope—U-238—has been linked to Gulf War syndrome, cancer, leukemia, and lymphoma, among other serious ailments. Even more uncertain is the longterm impact of being raised by the kind of nerds who would give their kid an Atomic Energy Lab."