Scientists announce discovery of 3.6 million-year-old relative of 'Lucy'

Cleveland... Meet "Lucy's" great-grandfather. Scientists from The Cleveland Museum of Natural History, Kent State University, Case Western Reserve University, Addis Ababa University and Berkeley Geochronology Center were part of an international team that discovered and analyzed a 3.6 million-year-old partial skeleton found in Ethiopia. The early hominid is 400,000 years older than the famous "Lucy" skeleton. Research on this new specimen indicates that advanced human-like, upright walking occurred much earlier than previously thought. The discovery and results from this initial analysis will be published this week in the online early edition of the Proceedings of the National Academy of Sciences.