- (3/-1) This theoretical physicist, after whom the hypothetical radiation emitted by black holes is named, spoke with the aid of a computer at TED 2008.
- (6/-2) Burt Rutan, who won this alphabetic award for spaceship design, gave a 2006 TED talk on â€œthe future of space.â€
- (9/-3) This historian and author of â€œTeam of Rivalsâ€ spoke in 2008 about events in the lives of Lyndon Johnson and Abraham Lincoln.
- (12/-4) This Pritzker Prize winning architect who designed Seattle\'s Experience Music Project asked â€œThen What?â€ in 2002.
- (15/-5) In 2009, this inventor of the Segway demonstrated a brain-operated prosthetic arm he developed for the U. S. military.
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