The Baghdad batteries and the Antikythera mechanism have puzzled many historians -- they just appear too advanced for their time. Where did they come from? Listen in and learn why some people think we've drastically underestimated ancient civilizations.

Wikileaks allows whistleblowers across the planet to anonymously submit reports of crime by businesses, individuals and governments. Tune in and learn why some people, including the U.S. government, want the site shut down.

Decades of strange accidents and alleged disappearances have given the Bermuda triangle a terrible reputation -- but how much of this is deserved? Tune in to learn more about the paranormal theories and skepticism concerning the Bermuda Triangle.

It's no secret that older maps were inaccurate, or completely unreliable. Yet fringe historians believe that some ancient maps are more than error-ridden antiquities. In fact, they think these maps may change history as we know it. Tune in and learn why.

John F. Kennedy and Abraham Lincoln are two of history's most popular and influential U.S. presidents -- unfortunately, they were both also assassinated. Yet some people believe we're missing the big picture behind these deaths.Want to know more? Tune in.

The difference between misinformation and disinformation is one of intent: Misinformation is accidental, while disinformation is purposely spread. Tune in to learn more about propaganda techniques -- and what makes a disinfo agent -- in this episode.

If electric cars have been around since the 19th century, then why haven't they become more widespread? Skeptics say the technology isn't viable yet, but conspiracy theorists think there's more to the story. Tune in and learn more in this podcast.

Everyone's heard of UFOs, but what about unidentified submerged objects? This episode takes a look at the bizarre Shag Harbour event, in which a mysterious object crashed from the sky -- and allegedly escaped weeks later. Tune in to learn more about USOs.

The Denver International Airport opened in 1995. But some people say it's no ordinary airport, and they believe something lurks beneath the tarmac. Learn more about the conspiracy theories surrounding Denver's airport in this podcast.

Everyone's familiar with the idea of UFOs, those mysterious airborne objects often linked with extraterrestrials -- but what if there weren't any aliens involved? Tune in and learn why some people believe Nazis may be responsible for modern UFO sightings.