Betsy Aardsma was murdered in Penn State University’s library basement. It is now a cold case. However, one suspect stands out from the rest.

In 2007, the Sealand Skull was found Olstykke, Denmark. Carbon dating revealed this being lived between 1200 and 1280 AD. But what is it?

Some believe John Wilkes Booth escaped Union soldiers in the early hours of 26 April 1865 only to commit suicide almost 40 years later.

The 20th century had its fair share of unexplained mysteries. Here are five of the most puzzling unsolved murders that stumped investigators.

The triangular Roswell Rock, discovered in September 2004, is magnetic with a raised design similar to a 1996 crop circle found in England.

A number of recent NASA photos have sparked our imagination and added to the mystery of the universe. What is NASA saying about them?

Die Glocke, or Nazi Bell, is allegedly some type of Wunderwaffe (wonder weapon) with anti-gravitational capabilities. Is the story a hoax?

The Superman Curse pertains to a series of tragedies that have occurred to individuals associated with the Superman franchise.