May 18th in history:
On May 18th, 1927, more than 40 people, mostly children, died in the deadliest attack on a school in U.S. history, when a bomb went off at a school in Bath Township, Michigan. The explosion was planned by a school board member, who was upset that rising property taxes used to fund the schools were driving him out of his farm home.
Another man-made blast, by a rocket, sent the Apollo 10 mission into space on May 18th, 1969. It was the second manned spacecraft to orbit the moon, and the crew rehearsed procedures needed for the landing of Apollo 11 two months later.
Nature created a major explosion on this date in 1980, when the Mount St. Helens volcano in Washington State erupted. Fifty-seven people died in the explosion, which followed weeks of earthquakes and the venting of steam.
May 22nd in history:
Only two volcanic eruptions occurred in the U.S. during the 20th century. One was the Mount St. Helens eruption of 1980. The other happened on May 22nd, 1915, with an explosion at Lassen Peak in northern California.
Another powerful act of nature, an earthquake, struck southern Chile on this date in 1960, killing thousands of people. Known as the Valdivia quake, it was the strongest earthquake ever recorded, measuring 9.5 on the Richter Scale. Severe tornadoes also have occurred on May 22nd, in Hallam, Nebraska (in 2004) and Joplin, Missouri (2011). The Joplin twister caused more than 150 deaths, and was the deadliest tornado in the U.S. in more than 60 years.
Wreckage from an airplane explosion fell from the sky onto Missouri and Iowa on May 22nd, 1962, when a Continental Airlines flight between Chicago and Kansas City blew up. All 45 people aboard were killed. One of the passengers, who had earlier taken out a large insurance policy, apparently planted a bomb in a restroom. The tragedy reportedly inspired part of the plot of the 1970 movie “Airport.”
In May of 1962, Iowa native Johnny Carson was preparing to take over NBC’s “Tonight Show.” He had just been hired to replace the departing Jack Paar. Carson stayed on as host of “Tonight” longer than any other person, almost 30 years, ending his run on May 22nd, 1992.
Another TV personality named “Johnny” made his debut on this day in 1910: that was the birthdate of announcer Johnny Olson, who’s most famous for shouting “Come on down!” to contestants on “The Price Is Right.” Olson also served as the announcer on “What’s My Line?,” “Match Game,” and “The Jackie Gleason Show.”