How Lie Detectors Work
Stuff You Should Know1 Sep 2011

How Lie Detectors Work

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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How Altruism Works

How Altruism Works

Is there such a thing as a truly unselfish act? Check out this HowStuffWorks podcast and learn more about the nature of altruism. Learn more about your ad-choices at https://www.iheartpodcastnetwork....

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How Lame Ducks Work

How Lame Ducks Work

In U.S. politics, a lame duck is a president who will not be re-elected because he or she has been passed over for election, or already served the maximum two terms. Learn more about the origin of lam...

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How Grassoline Works

How Grassoline Works

Could switch grass become the car fuel of the future? Learn more about alternative fuel in this HowStuffWorks podcast. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omny...

17 Apr 20085min

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