Everyone is jumping on the reunion tour bandwagon these days, and the paleontologists greedy museum directors of the world are not to be left out of the mix. Lucy, the famous (if you prefer science over Hollywood) 3.2-million-year-old fossil, is going on tour too. She's got some contentious bones. The original set of fossils--representing the oldest, most intact human ancestor--has been swept out of Ethiopia, where she was supposed to stay in perpetuity, and is......