Are crop circles the work of alien visitors? Are they a natural phenomenon? Are they elaborate hoaxes perpetrated by some very dedicated humans? HowStuffWorks takes a look into the mystery of crop circles -- what they are, where they can be found, how they can be made and how researchers are trying to separate the supernatural from the scientific. See more »

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 »

According to most pet psychics, you communicate with your pets telepathically all the time, without even knowing it. Learn about the controversies associated with animal communication. See more »

How could a man catch fire -- with no apparent source of a spark or flame -- and then burn so completely without igniting anything around him? Can a person really go up in flames for seemingly no reason at all? See more »

To some people, a crystal skull is simply an object carved from quartz crystal in the shape of a human skull. But to those that believe in the supernatural and the occult, they represent doom and destruction, hope and healing, or even a view into the past, present and future. See more »

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. See more »