On this day: May 22

Published On: May 21 2013 04:07:18 PM EDT   Updated On: May 22 2015 02:00:00 AM EDT

A former U.S. vice president is indicted for treason, the most powerful earthquake ever recorded hits Chile, "Pac-Man" makes his debut, Johnny Carson signs off, and a deadly tornado devastates Joplin, Mo., all on this day.