"SDH subtitles (subtitles for the deaf and hard-of-hearing) are a function of the disc and serve the same purpose as closed-captions"--Container.
Originally broadcast as an episode of the television program "Nova" on the PBS network in 2021.
Title from container.
Narrator, Talithia Williams.
DVD; NTSC; widescreen version stereo.
In English with optional English subtitles for the deaf and hard-of-hearing (SDH); descriptive audio.
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