But there are physical signs, and in one case the stress upon the liar produced convulsions. Studies say most people tell two lies a day, mainly harmless—but nations in the past have tried combat and even torture on prevaricators. What are the “tells” of a liar—and what should you watch for in practiced liars, short of putting them on a lie detector?

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When lying isn’t bad: Why kids fib, and why, sometimes, it is necessary.

For a safer life, many embark on the dangerous trek to seek asylum in the U.S. (Pictured above, Samanta Hilton, Alexa Smith, and Escarle Lovely in Honduras.)

Read more about those who risk everything in search of safety.

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