Hanna-Barbera was a company that made cartoon television programs and movies. Some of these cartoons were Tom and Jerry, Droopy, Spike and Tyke, The Jetsons, The Flintstones, Scooby-Doo, Yogi Bear, Smurfs, Pink Panther, Wally Gator, and Peter Potamus, and the 1973 movie version of Charlotte's Web. It was started by and named after William Hanna and Joseph Barbera. In 1991, Turner Broadcasting bought Hanna-Barbera. In 1992, Cartoon Network was launched. In 2001, Hanna-Barbera studios was shut down and moved to Warner Bros. Animation. After the death of Hanna on March 22, 2001, Hanna-Barbera split into two parts: Warner Bros. Animation (for older cartoons) and Cartoon Network Studios (for the newer ones on Cartoon Network).