The True Story Behind the World's Largest T-Rex Skeleton Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email The world's largest Tyrannosaurus Rex, named Sue, is seen at the Dinosaur Expo 2005 after it's assembly was completed at the National Science Museum on March 16, 2005 in Tokyo, Japan. ( Koichi Kamoshida / Getty ) Produced by Ellen Frankman Produced by PRI and WNYC