Bill Nye

William Sanford "Bill" Nye (born November 27, 1955), popularly known as Bill Nye the Science Guy, is an American science educator, comedian, television presenter, actor, writer, scientist, and former mechanical engineer, best known as the host of the Disney/PBS children's science show Bill Nye the Science Guy (1993–1998) and for his many subsequent appearances in popular media as a science educator.

Bio from Wikipedia, the free encyclopedia. Photo by Bill Hrybyk, NASA Goddard Space Flight Center [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons.