Overview: NOVA explores whether "yellow rain," described by members of the Hmong tribe of Laos, is a form of chemical warfare—or a naturally occurring phenomenon.
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First Air Date: Mar 03, 1974Last Air date: Oct 09, 2024Season: 51 SeasonEpisode: 991 EpisodeRuntime: 55 minutesQuality: HDIMDb: 6.80 / 10 by 114 usersPopularity: 189.237Language: English