Stuff You Should Know


Society & Culture

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Society & Culture 4
Top 200 13

How do landfills work? How do mosquitos work? Join Josh and Chuck as they explore the Stuff You Should Know about everything from genes to the Galapagos in this podcast from HowStuffWorks.com.

How Lie Detectors Work

September 1st, 2011

Episode 364 of 951 episodes

Instead of actually detecting lies, polygraph machines sense physiological variations, ostensibly brought on by guilt. The results are subject to interpretation, and therefore controversial. Join Josh and Chuck as they investigate the polygraph.

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