Lance Armstrong (left) and Tyler Hamilton compete in the 90th Tour de France in 2003. Hamilton later testified in the doping case brought against Armstrong and the U.S. Postal cycling team. Franck Fife /AFP/Getty Images hide caption

The New Britain Jr. Hurricanes participate in a Heads Up Football clinic on Oct. 9 in New Britain, Conn. The program is teaching kids safer tackling across the country. Kike Calvo/AP Images for National Football League hide caption

A group of Asian-Americans, including descendants of Chinese railroad workers, recreated an iconic photo on the 145th anniversary of the first transcontinental railroad's completion at Promontory Summit, Utah. Courtesy of Corky Lee hide caption

While translating for Japanese tourists on a boat in Hawaii, Leah Warshawski learned about the ocean, knowledge she later used in film production. Courtesy of Leah Warshawski hide caption