On this day: February 26

Published On: Feb 25 2013 01:02:15 PM CST   Updated On: Feb 26 2013 01:00:00 AM CST
Grand Canyon blurb

The Grand Canyon becomes a national park, Michael Jackson's "Thriller" album hits No. 1, a truck bomb explodes under the World Trade Center, and teenager Trayvon Martin is shot and killed, all on this day.