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Appearances
100 Greatest Discoveries
Main cast, played by Bill Nye
- Episode 1x01: Physics (Dec 22, 2004)
- Episode 1x02: Earth Sciences (Dec 29, 2004)
- Episode 1x03: Medicine (Jan 5, 2005)
- Episode 1x04: Astronomy (Jan 12, 2005)
- Episode 1x05: The Origin and Evolution of Life (Jan 19, 2005)
- Episode 1x06: Chemistry (Jan 19, 2005)
- Episode 1x07: Biology (Jan 26, 2005)
- Episode 1x08: Genetics (Feb 2, 2005)
- Episode 1x09: Top Ten (Feb 9, 2005)