On this day: April 26

Published On: Apr 25 2013 10:18:08 AM CDT   Updated On: Apr 26 2016 01:00:00 AM CDT

English settlers make their first landing in North America, John Wilkes Booth is shot and killed, an explosion rocks the Chernobyl Nuclear Power Plant, and Lucille Ball dies, all on this day.

OTD April 26 - Conan O'Brien
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1993: NBC announces that Conan O'Brien, a writer and producer for "The Simpsons," would take over for David Letterman as host of "Late Night." Letterman was preparing to leave the network for CBS after being passed over in favor of Jay Leno to replace Johnny Carson as the host of "The Tonight Show."

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