Bertha L Collins (born 1902)

In 1902, in the year that Bertha L Collins was born, the modern air conditioner was invented by Willis H. Carrier. The company that he worked for needed to find a way to control humidity and by solving this problem, Carrier created a system that could be used for cooling the rooms of a house. The Sun Belt thanks him!

In 1937, on May 6th, the German zeppelin the Hindenburg caught fire and blew up. The Hindenburg was a passenger ship traveling to Frankfurt Germany. It tried to dock in New Jersey, one of the stops, and something went wrong - it blew up. Thirty-six people were killed out of the 97 on board - 13 passengers, 22 crewmen, and one ground worker. The reasons for the explosion are still disputed.

In 1968, on April 4th, Dr. Martin Luther King, Jr., the civil rights leader, was shot and killed by an assassin in Memphis. James Earl Ray was apprehended and plead guilty to shooting Dr. King. Ray died in jail in 1998.

In 1974, on February 5th, Patty Hearst, age 19 - granddaughter of William Randolph Hearst and daughter of publisher of the San Francisco Examiner Randolph Hearst - was kidnapped by the Symbionese Liberation Army, a left wing terrorist group. She was found, alive, 19 months later.

In 1987, was the first time that a criminal in the United States - a serial rapist - was convicted through the use of DNA evidence.