How many underground bases exist today? Is there any way to figure out what's stored in the world's various secret bunkers? Learn more in today's video.

Why do so many people think there's an underground base in Dulce, New Mexico? Join Ben and Matt as they look at the three primary sources of these claims, as well as what the skeptics and the supporters have to say.

Conspiracy theories about hidden knowledge of extraterrestrials have been around for decades, but one of these theories has an interesting twist: What if the world's governments are using pop culture to prepare humanity for the arrival of aliens?

What could turn a mild-mannered mother of two into a crazed torturer? What could change and innocent hiking group into a depraved cult? Tune in to learn more.

We read about cults - and their charismatic leaders - all the time. But how could you actually start a cult? What do most cults and their leaders have in common? Tune in to learn more.

How do criminals get caught? How difficult - or easy - is it to get away with murder? The answers might surprise you.

The U.S. has the world's largest prison population, and some prisoners are held by private companies. Proponents of this practice believe the state saves money, but not everyone buys the official story. Tune in to learn more about for-profit prisons.

What is a fraternal order? Where do they come from, and why can some of these organizations be controversial? Tune in to learn more.

The Family is a secretive evangelical group with powerful connections. It lobbies across the world for laws that reflect its values. This might be controversial to some, but it isn't illegal. So why do some believe this group is dangerous?

Scientists and religious officials alike have often been fascianted by the pineal gland - but are any of the more outrageous rumors about it true? What does it do? Is there really something the establishment doesn't want you to know about your own brain?