Doug Owsley, division head for Physical Anthropology at the Smithsonian's National Museum of Natural History, demonstrates how the strike marks were made on the skull of "Jane of Jamestown" seen silhouetted at left, during a news conference at the museum in Washington, Wednesday, May 1, 2013. Scientists announced during the news conference that they have found the first solid archaeological evidence that some of the earliest American colonists at Jamestown, Va., survived harsh conditions by turning to cannibalism presenting the discovery of the bones of a 14-year-old girl, "Jane" that show clear signs that she was cannibalized. (AP Photo/Carolyn Kaster) ( Jamestown Cannibalism )