Technology See Inside How Skulls Speak New 3-D software is helping scientists identify the sex and ancestral origins of human remains with greater speed and precision By Anna Kuchment Photographs by Floto + Warner Like the detectives on the CBS drama Cold Case, anthropologist Ann H. Ross of North Carolina State University spends many of her days thinking about unsolved crimes. Her most recent work has aimed at developing software that helps forensic scientists determine the sex and ancestry of modern human skulls. Typically forensic scientists measure remains with sliding rulers called calipers. Doing so results in two-dimensional measurements. Ross’s software, called 3D-ID and developed with a grant from the U.S. Department of Justice, relies on three-dimensional measurements that scientists take with a digitizer—a computer and stylus. “The stylus allows you to place the coordinates in real space, so you get a better idea of the actual biological form of whatever you’re measuring,” Ross says. This is only a preview. Get the rest of this article now! Select an option below: Buy Digital Issue Customer Sign In *You must have purchased this issue or have a qualifying subscription to access this content It has been identified that the institution you are trying to access this article from has institutional site license access to Scientific American on nature.com. Click here to access this article in its entirety through site license access. ADVERTISEMENT Scientific American is a trademark of Scientific American, Inc., used with permission © 2015 Scientific American, a Division of Nature America, Inc. All Rights Reserved.