This Stanford University website announces the significant findings by the physicists conducting the BaBar experiment at the Stanford Linear Accelerator Center (SLAC) that a dramatic difference exists between the behavior of matter and antimatter. Students and educators can learn about B mesons and anti-B mesons and their decay rates. Users can find a brief discussion about why understanding differences between matter and antimatter is so important. The site offers additional links to photographs of the BaBar detector, a description of charge parity violation, and a publication about the observation of direct CP violation.