Today is Tuesday, April 20, the 111th day of 2004. There are 255 days left in the year.

Today's Highlight in History:

Five years ago, on April 20, 1999, the Columbine High School massacre took place in Littleton, Colo., as students Eric Harris and Dylan Klebold shot and killed 12 classmates and one teacher before taking their own lives.

On this date:

In 1812, the fourth vice president of the United States, George Clinton, died in Washington at age 73, becoming the first vice president to die while in office.

In 1836, the Territory of Wisconsin was established by Congress.

In 1889, Adolf Hitler was born in Braunau, Austria.

In 1940, RCA publicly demonstrated its new and powerful electron microscope.

In 1945, during World War II, Allied forces took control of the German cities of Nuremberg and Stuttgart.

In 1968, Pierre Elliott Trudeau was sworn in as prime minister of Canada.

In 1971, the Supreme Court upheld the use of busing to achieve racial desegregation in schools.

In 1972, the manned lunar module from Apollo 16 landed on the moon.

In 1978, a Korean Air Lines Boeing 707 crash-landed in northwestern Russia after being fired on by a Soviet interceptor after entering Soviet airspace. Two passengers were killed.

In 1980, the first Cubans sailing to the United States as part of the massive Mariel boatlift reached Florida.

Ten years ago: Israeli and PLO negotiators wrapped up an agreement transferring civilian government powers to Palestinians in the Gaza Strip and Jericho.

One year ago: U.S. Army forces took control of Baghdad from the Marines in a changing of the guard that thinned the military presence in the capital. Celebrating Easter, the Reverend Emmanuel Delly, a longtime Iraqi bishop, pleaded for safeguards against the persecution of Christians in the new Iraq. A landslide in southern Kyrgyzstan killed 38 people.

Today's Birthdays: Supreme Court Justice John Paul Stevens is 84. Actress Nina Foch is 80. Singer Johnny Tillotson is 65. Actor George Takei is 64. Actor Ryan O'Neal is 63. Rock musician Craig Frost (Grand Funk; Bob Seger's Silver Bullet Band) is 56. Actress Jessica Lange is 55. Singer Luther Vandross is 53. Actor Clint Howard is 45. Actor Crispin Glover is 40. Country singer Wade Hayes is 35. Actor Shemar Moore is 34. Rock musician Mikey Welsh is 33. Actress Carmen Electra is 32. Actor Joseph Lawrence is 28.

Thought for Today: "The law that will work is merely the summing up in legislative form of the moral judgment that the community has already reached." - Woodrow Wilson, American president (1856-1924).