1 of 24: In an Oct. 18, 2010 photo, Bill Nye, host of television's "Bill Nye the Science Guy", arrives as President Barack Obama hosts a White House science fair in Washington. Nye, host of the Emmy-winning 1990s television show "Bill Nye the Science Guy," collapsed Tuesday, Nov. 16, 2010 during a California speech, then got up and continued his presentation. (AP Photo/J. Scott Applewhite)

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