Overview:Dr Helen Czerski examines the world of sound waves.
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First Air Date: Mar 02, 2017Last Air date: Mar 09, 2017Season: 1 SeasonEpisode: 2 EpisodeRuntime: 60:14 minutesQuality: HDIMDb: 10 / 10 by 0 usersPopularity: 5.865Language: en
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