Earth Day by the numbers

Published: Apr 10 2012 12:04:15 PM EDT   Updated On: Apr 22 2014 02:00:00 AM EDT

Founded in 1970 as a day of environmental education, Earth Day is now celebrated worldwide. Check out the numbers behind this global holiday.

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    With Sunday marking the 20th anniversary of the Oklahoma City bombing, look back at the other violence that has occurred in April in America.

On this Day

  • Daffy Duck's debut, Porky's Duck Hunt, 1937

    Warner Bros. Pictures

    On this day: April 17

    Benjamin Franklin dies, Daffy Duck makes his debut, the Bay of Pigs invasion begins, the ill-fated Apollo 13 returns to Earth, and two Los Angeles police officers are convicted in the Rodney King beating, all on this day.