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Do the Digits in My Social Security Number Represent Anything in Particular?

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Is it just a random number? Moreover, do they recycle Social Security numbers so that if someone dies, that number goes back into action?

How Lie Detectors Work

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Lie detection is a consistently controversial topic -- how can a machine tell truth from deception? Does everyone have the same physiological reaction when telling a lie? If so, how can some people "beat the box"? Find out what these devices measure and if they really can detect lies.

Why Was 911 Chosen as the Emergency Phone Number?

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During an emergency, Americans know to dial 911 for help. How and why was that number selected as the emergency phone number for the entire country?

How Urban Legends Work

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Urban legends persist regardless of whether they are true or not. Read popular urban legends and learn why urban legends are culturally relevant.

Who Came Up with Mother's Day and Why?

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Mother's Day is set aside in many countries as a day to honor our mothers and grandmothers. The origin of this day can be traced back much farther than you might think. Learn about the history of this special day.

How Wiretapping Works

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Wiretapping allows people to listen to the phone calls of others. Learn how wiretapping works, wiretapping history and about wiretapping techniques.

How Lethal Injection Works

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Lethal injection is not a light topic, but it's the subject of much debate. Find out about the various procedures.

How does someone become a saint?

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On Sunday, Pope John Paul II beatified Mother Teresa, bringing the late nun and revered humanitarian a step closer to sainthood. Learn about the Roman Catholic Church's canonization process.

Why is it considered unlucky when the thirteenth day in a month falls on a Friday?

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Why is it considered unlucky when the thirteenth day in a month falls on a Friday?

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