Overview:Bill Cosby guides viewers through the most exciting footage from two decades of NOVA in a 20th anniversary salute. Real-life action, adventure, mystery, drama and non-stop discovery fill this 90-minute special.
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First Air Date: Mar 03, 1974Last Air date: May 22, 2024Season: 51 SeasonEpisode: 981 EpisodeRuntime: 55:14 minutesQuality: HDIMDb: 4.198 / 10 by 106 usersPopularity: 247.278Language: en
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