Season 7, Episode 9 Great Inventions
First Aired: March 14, 2000
Examining the inventions that have had the greatest impact on civilization. Included: the wheel, the lightning rod, the transistor, the light bulb, the microscope, the automobile, the telephone, the television and the computer.
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- Premiered: December 10, 1993
- Rating: TV-PG
- Premise: Architectural and engineering landmarks of the 19th and 20th centuries. The programs previously aired on A&E's `Time Machine' series. Among the subjects: the Brooklyn Bridge, the Maginot Line, the Erie Canal, the Aswan Dam and the Trans-Siberian Railroad. (more)
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