The 1937 explosion of the Hindenburg airship was one of the 20th century's most famous disasters. In its day, the dirigible was the world's fastest, most technologically advanced, and most luxurious transportation. But in 34 seconds, the aircraft was gone. Was it a victim of the nitrogen gas used for lift? A retired NASA scientist and hydrogen specialist sets out to prove that the Hindenburg's real flaw was only skin deep.