American Innovations

Lie Detector | The Heart of a Liar | S43-E1

Humans are shockingly bad at telling whether or not someone is lying. That’s why, a century ago, psychologists and criminologists developed machines to detect lies for us, by measuring blood pressure, pulse, and breathing rate. Their lie detectors promised to revolutionize the criminal justice system. But is it really possible for science to separate truth from lies?You can binge all episodes of American Innovations exclusively and ad-free on Wondery+. Find Wondery+ in the Wondery App or on Apple Podcasts.See Privacy Policy at <a href="https://art19.com/privacy" rel="noopener noreferrer" target="_blank">https://art19.com/privacy</a> and California Privacy Notice at <a href="https://art19.com/privacy#do-not-sell-my-info" rel="noopener noreferrer" target="_blank">https://art19.com/privacy#do-not-sell-my-info</a>.

DNA science. Artificial intelligence. Smartphones and 3D printers. Science and technology have transformed the world we live in. But how did we get here? It wasn’t by accident. Well, sometimes it was. It was also the result of hard work, teamwork, and competition. And incredibly surprising moments.Hosted by bestselling author Steven Johnson (“How We Got To Now”), American Innovations uses immersive scenes to tell the stories of the scientists, engineers, and ordinary people behind the greatest discoveries of the past century.Listen to American Innovations on the Wondery App or wherever you get your podcasts. You can binge all episodes ad-free on Wondery+. Join Wondery+ in the Wondery App, Apple Podcasts or Spotify. Start your free trial by visiting <a href="http://wondery.com/links/the-cat-in-the-hat-cast/" rel="noopener noreferrer" target="_blank">https://wondery.com/links/american-innovations/</a> now.