5 Most Mysterious & Unidentified Submerged Objects (USOs)

We are all familiar with UFOs, Unidentified Flying Objects that are usually associated with alien crafts. But have you ever heard of a USO? ...

7 Strangest Historical Mysteries that Will Baffle You

From giant unexplained explosions to monuments 10,000-20,000 years old to the idea that Christopher Columbus may never have even existed, th...