June 6 marks National Yo-Yo Day, a celebration of one of the world's oldest and most enduring toys. The date honors the birthday of Donald F. Duncan Sr., the entrepreneur who helped turn the yo-yo ...
PLEASANT HILL, Calif. (KTVU/BCN) - The Bay Area Classic Yo-Yo Championships, one of the longest-running and largest yo-yo contests in the United States, came to Jack London Square Saturday. Having ...