Conspiracy theories are often ridiculous explanations for a disputed case or matter. There are conspiracy theories about everything from aliens to the September 11, 2001 terrorist attacks on America. Find out how these theories get started in this article. See more »

Like many human beliefs, the fear of Friday the 13th (known as paraskevidekatriaphobia) isn't exactly grounded in scientific logic. But that doesn't stop us from feeling that it's "unlucky." See more »

The idiom says whatever can go wrong will go wrong. Is it the mysterious power of Murphy's Law, or is it simply people who give the law relevance? See more »

There are several dangers that remote jungle visitors could face. Disease, dangerous animals, deadly plant life, the risk of having your head shrunken by vengeful warriors … wait, what? If you think that shrinking a human head isn't possible, read on for a frightening primer on the ritual and those that perform it. See more »

OK, so a good friend of mine was driving down the highway and he picked up this hitchhiker… Urban legends are the basis for some truly spooky ghost stories. See how the tales get started and how they make their way to you. See more »

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Before you board the crab boat for your first fishing gig, the captain tells you to ditch the suitcase and the banana. This is deadly work. Are you really going to argue with superstition? See more »

Everybody has bad days, but Fortune seems to have it in for some people. You decide: Are these 10 infamous cases of bad luck coincidences or curses? See more »

From Johnny Appleseed to Paul Bunyan, figures of American folklore continue to inspire and engage. Before the invention on radio and television, people created these characters to help people cope with hard times. Learn more about these legendary figures. See more »

Someone told me that if there are 20 people in a room, there's a 50/50 chance that two of them will have the same birthday. How can such a small group have two people with the same birthday in it? See more »