Paleontologist Neil Shubin of the University of Chicago and the Field Museum explains how a 375 million-year-old fossil called Tiktaalik bridges the gap between primitive fish and four-legged animals. Found in the Canadian Arctic, Tiktaalik offers strong supporting evidence of Darwin's theory of evolution. Don't miss the broadcast of NOVA's "Judgment Day: Intelligent Design on Trial," airing November 13th on PBS. Watch NOVA every Tuesday night on PBS. Or join us online at pbs.org/nova. "Judgment Day: Intelligent Design on Trial" is produced by NOVA and Vulcan Productions, Inc. in association with The Big Table Film Company. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by The DOW Chemical Company, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. To learn more, visit http://www.pbs.org/nova/id Less