Unexplained phenomena are all around us. Here you can learn about topics that include spontaneous human combustion, crop circles and the Bermuda Triangle.

What are crop circles?

Farmers have reported finding strange circles in their crops for centuries. What are crop circles and how are these gigantic patterns formed? Find out the answers to these questions in this article.

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  • 10 'Unsolved' Mysteries That Have Been Solved

    10 'Unsolved' Mysteries That Have Been Solved

    Was Anna Anderson really Anastasia Romanov? Does the Bermuda Triangle really exist? Wonder no more: We have the answers to these and other formerly unsolved mysteries. See more »

  • 10 Famous Paranormal Hoaxes

    10 Famous Paranormal Hoaxes

    Crop circles. Alien autopsies. Time travelers. These are just some of the paranormal phenomena that people have believed in but were later found to be hoaxes. Often, even when someone admitted to making it up, that didn't stop the true believers. See more »

  • 10 Unidentified Sounds That Scientists Are Seriously Looking Into

    10 Unidentified Sounds That Scientists Are Seriously Looking Into

    "Stop, what's that sound?" Doesn't it creep you out when you don't know? There are lots of sounds out there that baffle even scientists. See more »

  • Are the Dropa stones authentic?

    Are the Dropa stones authentic?

    Ancient caves! Mysterious stones! Tiny little beings with strange heads! Sounds like the plot of an Indiana Jones movie, doesn't it? The legend of the Dropa stones has persisted for over half a century now, but is any of it actually true? See more »

  • Are the Ica stones authentic?

    Are the Ica stones authentic?

    Humans riding dinosaurs: Sounds like a kid's dream come true! History tells us this couldn't possibly have happened, but the Ica stones say otherwise. So is there any truth to these allegedly ancient carvings, or are they just an elaborate hoax? See more »

  • Did the Colossi of Memnon used to sing at sunrise?

    Did the Colossi of Memnon used to sing at sunrise?

    Singing monuments sounds like the premise of an enchanted Broadway musical -- or a scene straight out of "A Night at the Museum." So did the Colossi of Memnon actually sing at one time? And if so, why don't they sing anymore? Stage fright? See more »

  • Do fish ever really rain from the sky?

    Do fish ever really rain from the sky?

    Fans of the Super Mario Bros. series know that enemy fish can attack from above. And fans of the film "Magnolia" know that sometimes frogs do rain from the sky. But this is purely the realm of pop culture. Things like this don't really happen, right? See more »

  • How Crop Circles Work

    How Crop Circles Work

    Are crop circles the work of alien visitors? Are they a natural phenomenon? Are they elaborate hoaxes perpetrated by some very dedicated humans? Learn how researchers try to separate the supernatural from the scientific. See more »

  • How Crystal Skulls Work

    How Crystal Skulls Work

    To some people, a crystal skull is simply a crystal in the shape of a human skull. But to those who believe in the supernatural, it can represent doom or hope. See more »

  • How Ouija Boards Work

    How Ouija Boards Work

    A key ingredient of horror films, junior-high slumber parties and occult practices, the Ouija board has been fascinating and scaring people for more than a century. But does it really contact the spirit world, or is there a more logical explanation? See more »

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