DVD, wide screen.
English dialogue; subtitled in English for the deaf and hard of hearing (SDH).
Title from web page and container.
"Subtitles are a function of the disc and serve the same purpose as closed captions. Described video (for the visually impaired) is available as a secondary audio track"--Container.
Originally broadcast as an episode of NOVA on the PBS network.
Wide screen.
Narrator, Miles O'Brien.
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