On Sept. 6, 1916, the first self-serve grocery store, Piggly Wiggly, was opened in Memphis, Tennessee, by Clarence Saunders. (The store was set up to allow customers to hand-pick their groceries from shelves, rather than request them from a clerk standing behind a counter.)

Ten years ago

President George W. Bush acknowledged for the first time that the CIA was running secret prisons overseas and said tough interrogation had forced terrorist leaders to reveal plots to attack the United States and its allies. Japan’s Princess Kiko gave birth to a boy (later named Hisahito), providing the centuries-old Chrysanthemum Throne with its first male heir in more than 40 years. Anibal Sanchez threw a no-hitter in his 13th career start as the Florida Marlins beat the Arizona Diamondbacks 2-0.

Five years ago

A man with a rifle opened fire in an IHOP restaurant in Carson City, Nevada, killing three of five uniformed National Guard members and a woman having breakfast with her husband; gunman Eduardo Sencion also shot himself and died in the parking lot. Convoys of Moammar Gadhafi loyalists, including his security chief, fled Libya, crossing the Sahara into Niger.

One year ago

Guatemala held its general election; with no presidential candidate winning more than 50 percent of the vote, there was a runoff the following October between Jimmy Morales (who won) and Sandra Torres.

— By The Associated Press