MORE EVENTS ON THIS DAY

2011: American businessman Steve Jobs, a pioneer of the personal computer era who cofounded Apple and transformed it into one of the world's most successful companies, died at age 56. [ Take our quiz about tech companies.]

2007: Following years of speculation—and denials—American track star Marion Jones pleaded guilty to steroid use, and several months later she was stripped of her five Olympic medals, three of which were gold. [ Read our list of seven unsportsmanlike sportsmen.]

2001: Barry Bonds of the San Francisco Giants broke Mark McGwire's single-season home-run record when he hit his 71st and 72nd home runs of the season and finished the season with 73. [ How much do you know about baseball?]

1998: The Judiciary Committee of the U.S. House of Representativesrecommended impeachment hearings against President Bill Clinton. [ Test your knowledge of U.S. presidents.]

1975: English actress Kate Winslet, who was known for her sharply drawn portrayals of spirited and unusual women, was born. [Sort fact from fiction in our quiz about A-list actors.]

1970: PBS began broadcasting on American television, and it became known for various programs, notably the children's shows Sesame Street and Mister Rogers' Neighborhood (starring Fred Rogers).