Season 6, Episode 6 Invisible Flame
First Aired: February 22, 1979
"The Invisible Flame" examines the feasibility of hydrogen as a major energy source. Researchers discuss its potential as a pollution-free fuel; and show models of hydrogen-powered planes and trains, and prototypes of cars that can use hydrogen or gasoline.
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- Premiered: March 3, 1974
- Rating: None
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- Premise: PBS's premier science-documentary series, which has won six Peabody Awards and more than 20 Emmys (four in 2002 alone) since its 1974 debut. `Nova' clearly, and often engagingly, `demystifies' a vast range of science, technology and history topics---past a… (more)