IRA FLATOW, HOST:
This is SCIENCE FRIDAY; I'm Ira Flatow. You've heard of Leonardo, Michelangelo, Galileo, Newton, maybe even Pascal and Hooke, all Renaissance men who, between them, innovated in painting, sculpture, physics, math, chemistry, astronomy, architecture, philosophy, the list goes on. But how about Athanasius Kircher? Yeah, have you heard of him? Not ringing - no bells are ringing?