Today is the 207th day of 2012 and the 36th day of summer.

TODAY'S HISTORY: In 1952, Puerto Rico became a self-governing U.S. commonwealth.

In 1956, the Andrea Doria ocean liner collided with the cruise ship Stockholm off the New England coast and sank the next day, killing 51.

In 1978, the first "test-tube baby," Louise Brown, was born in England.

In 2005, two major unions, the Teamsters and the Service Employees International Union, withdrew from the AFL-CIO.

TODAY'S BIRTHDAYS: Henry Knox (1750-1806), first U.S. secretary of war; Eric Hoffer (1902-1983), philosopher; Rosalind Franklin (1920-1958), biophysicist; Estelle Getty (1923-2008), actress; John Gibson (1946- ), radio/TV personality; Walter Payton (1954-1999), football player; Iman (1955- ), model/actress; Thurston Moore (1958- ), musician; Matt LeBlanc (1967- ), actor.

TODAY'S SPORTS: In 1976, American Edwin Moses ran in his first international track and field event at the Montreal Olympics -- the 400m hurdles -- and won a gold medal with a world record-setting time of 47.64 seconds.

TODAY'S FACT: In plebiscites held in 1967, 1993 and 1998, Puerto Rican voters chose to retain commonwealth status.

TODAY'S QUOTE: "A man is likely to mind his own business when it is worth minding. When it is not, he takes his mind off his own meaningless affairs by minding other people's business." -- Eric Hoffer

TODAY'S NUMBER: 3.2 million -- approximate combined membership of the Teamsters and the Service Employees International unions in 2012.

TODAY'S MOON: Between new moon (July 19) and first quarter moon (July 26).

Today is the 206th day of 2012 and the 35th day of summer.

TODAY'S HISTORY: In 1847, Brigham Young and the first Mormon pioneers arrived at Utah's Salt Lake Valley.

In 1866, Tennessee became the first state to formally rejoin the Union following the Civil War.

In 1959, Vice President Richard Nixon and Soviet Premier Nikita Khrushchev engaged in what became known as the "kitchen debate."

In 1998, a lone gunman opened fire in the U.S. Capitol building, killing two police officers.

TODAY'S BIRTHDAYS: Simon Bolivar (1783-1830), South American liberator; Alexandre Dumas, pere (1802-1870), playwright/novelist; Amelia Earhart (1897-1937), aviator; Bella Abzug (1920-1998), activist/politician; Billy Taylor (1921-2010), jazz pianist; Karl Malone (1963- ), basketball player; Barry Bonds (1964- ), baseball player; Jennifer Lopez (1969- ), actress/singer; Elisabeth Moss (1982- ), actress.

TODAY'S SPORTS: In 2005, Lance Armstrong became the first cyclist ever to win the Tour de France seven consecutive times.

TODAY'S FACT: Barry Bonds will be eligible for the Baseball Hall of Fame for the first time in 2013. He must be named on 75 percent of ballots cast to gain admission.

TODAY'S QUOTE: "All for one, one for all -- that is our motto, is it not?" -- Alexandre Dumas, "The Three Musketeers"

TODAY'S NUMBER: 6.2 million -- reported membership of the Church of Jesus Christ of Latter-day Saints (aka Mormons) in the United States in 2012.

TODAY'S MOON: Between new moon (July 19) and first quarter moon (July 26).

Today is the 205th day of 2012 and the 34th day of summer.

TODAY'S HISTORY: In 1952, Gamal Abdel Nasser led a military coup that overthrew King Farouk I of Egypt.

In 1967, riots erupted in Detroit. Over the next five days, 43 people died, hundreds were injured and more than 2,000 buildings were burned to the ground.

In 1999, with the launch of Columbia, Eileen Collins became the first woman to command a U.S. shuttle flight.

TODAY'S BIRTHDAY: Haile Selassie (1892-1975), Ethiopian emperor; Anthony M. Kennedy (1936- ), Supreme Court justice; Don Imus (1940- ), radio personality; Woody Harrelson (1961- ), actor; Slash (Saul Hudson) (1965- ), musician; Philip Seymour Hoffman (1967- ), actor; Alison Krauss (1971- ), musician/singer; Daniel Radcliffe (1989- ), actor.

TODAY'S SPORTS: In 1996, injured American gymnast Kerri Strug scored a 9.7 on the vault as the U.S. won its first-ever gold medal in the women's team gymnastics competition.

TODAY'S FACT: Comet Hale-Bopp, discovered on this day in 1995, was visible to the naked eye for a record 18 months, from May 1996 to December 1997. The previous record holder, the Great Comet of 1811, was visible for about nine months.

TODAY'S QUOTE: "We must never lose sight of the fact that the law has a moral foundation, and we must never fail to ask ourselves not only what the law is, but what the law should be." -- Anthony M. Kennedy

TODAY'S NUMBER: 27 -- Grammy Awards won by bluegrass musician Alison Krauss during her career -- including six awards for a 2007 collaboration with Robert Plant -- more than any other female artist.

TODAY'S MOON: Between new moon (July 19) and first quarter moon (July 26).