Today is the 116th day of 2015 and the 38th day of spring.
TODAY'S HISTORY: In 1865, John Wilkes Booth, President Abraham Lincoln's assassin, was killed by Union troops in Virginia.
In 1937, German planes bombed the city of Guernica in Spain.
In 1986, a reactor ruptured at the Chernobyl nuclear plant in the Soviet Union, spreading radioactive material over much of Europe.
In 2000, Vermont Gov. Howard Dean signed the nation's first bill allowing gay couples to form civil unions.
TODAY'S BIRTHDAYS: Eugene Delacroix (1798-1863), artist; Frederick Law Olmsted (1822-1903), landscape architect; Ludwig Wittgenstein (1889-1951), philosopher; Charles Richter (1900-1985), seismologist; Bernard Malamud (1914-1986), author; I.M. Pei (1917- ), architect; Carol Burnett (1933- ), actress/comedian; Giancarlo Esposito (1958- ), actor; Jet Li (1963- ), actor; Kevin James (1965- ), actor/comedian; Tom Welling (1977- ), actor; Channing Tatum (1980- ), actor.
TODAY'S FACT: The United States has 99 operational nuclear reactors, more than any other nation.
TODAY'S SPORTS: In 1941, the organ, now a staple at Major League Baseball stadiums, made its debut at Wrigley Field, during a game in which the Chicago Cubs lost to the St. Louis Cardinals, 6-2.
TODAY'S QUOTE: "Of course it would cost something, but he was an expert in cutting corners; and when there were no more corners left he would make circles rounder." -- Bernard Malamud, "The Magic Barrel"
TODAY'S NUMBER: 64,000 -- square miles contaminated by radioactive material from the Chernobyl disaster, an area approximately the size of Wisconsin.
TODAY'S MOON: Between first quarter moon (April 25) and full moon (May 3).