Overview:Ever wonder how junk mail finds you? NOVA investigates the hidden world of direct marketing, pointing out how advertisers know a lot more about us than we think.
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First Air Date: Mar 03, 1974Last Air date: Sep 24, 2025Season: 52 SeasonEpisode: 1012 EpisodeRuntime: 55:14 minutesQuality: HDIMDb: 3.9 / 10 by 130 usersPopularity: 23.3169Language: en
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