Check out the article how the April fool was planned http://www.iflscience.com/environment/the-greatest-april-fools-day-prank-of-all-time-took-four-years-to-plan-and-involved-a-volcano/
Check out the article how the April fool was planned http://www.iflscience.com/environment/the-greatest-april-fools-day-prank-of-all-time-took-four-years-to-plan-and-involved-a-volcano/