Brad and the team hunt for the missing White House cornerstone, as well as a lost gun that could prove key to solving the infamous Amityville murders.

Witness what could be the first-ever audio recording of New Mexico's bizarre 'Taos Hum', which many say has been plaguing the area for decades. Plus, paranormal activity in Oklahoma and other strange phenomena.

What would happen if a UFO actually did land on Earth and humans found it? Engineers create a 'spaceship' to see how alien technology could work.

As we look forward to the first astronauts reaching Mars in the next 20 years, is there evidence to suggest human life was first seeded there?

When the Vieira brothers head west to explore an island shrouded in mystery, they uncover compelling evidence of giants, but their investigation takes a dark turn.

Concrete channels hidden in a mountaintop forest; a collapsing bridge; a marooned military base; the upright rusting carcass of a ship. Now they lie disused, contaminated, and dangerous. But who built them? And why were they abandoned?

Awesome analogies bring the biggest objects, farthest distances and fastest speeds down to earth. To truly understand the scale of the cosmos, we jump behind the wheel of monster trucks and scale the Golden Gate bridge.

Empty buildings and infrastructures are full of the echoes of real people and vanished lives, leaving many questions unanswered and mysteries unsolved.

Brad and the team hunt for the missing White House cornerstone, as well as a lost gun that could prove key to solving the infamous Amityville murders.

Witness what could be the first-ever audio recording of New Mexico's bizarre 'Taos Hum', which many say has been plaguing the area for decades. Plus, paranormal activity in Oklahoma and other strange phenomena.

What would happen if a UFO actually did land on Earth and humans found it? Engineers create a 'spaceship' to see how alien technology could work.

As we look forward to the first astronauts reaching Mars in the next 20 years, is there evidence to suggest human life was first seeded there?

When the Vieira brothers head west to explore an island shrouded in mystery, they uncover compelling evidence of giants, but their investigation takes a dark turn.

Concrete channels hidden in a mountaintop forest; a collapsing bridge; a marooned military base; the upright rusting carcass of a ship. Now they lie disused, contaminated, and dangerous. But who built them? And why were they abandoned?

Awesome analogies bring the biggest objects, farthest distances and fastest speeds down to earth. To truly understand the scale of the cosmos, we jump behind the wheel of monster trucks and scale the Golden Gate bridge.

We aim for the stars and find out why unwanted battleship guns allow the United States to gain vital information about the borders of space.

The team join the hunt for lost footage of a D-Day secret mission. Plus, can they find one of The Beatle's, George Harrison's, most famous guitars?

Hunt for the truth about the 1980s arcade game that's been linked to MK-Ultra, and join the search for a lost nuclear bomb. Plus, is Lake Michigan the final resting place for millions of dollars in stolen Confederate gold?

Laser weapons and tele-transporters would probably all be fitted to an alien spaceship. But what if they could be used by humans too?

Ancient astronaut theorists suggest that aliens have been guiding mankind in secret to bring about huge leaps in technological advancement.

Travel to the island nation of the Philippines, where the indigenous fighting style, Eskrima, was formed. From ancient forts in Cebu City to a modern military base in Manila, our hosts will learn the stick and knife techniques.

The English Channel during WWII was a strategic passageway separating two major enemies: Great Britain and Germany. Whoever controlled the Channel controlled the passage of warships and commercial vessels – basically all weapons supplies.

An exploration of Earth's cosmic neighbourhood. Looking beyond the borders of our solar system, what's nearby in our galaxy? How did Earth's place in the galaxy make it the perfect place for the development of advanced life?

We aim for the stars and find out why unwanted battleship guns allow the United States to gain vital information about the borders of space.

The team join the hunt for lost footage of a D-Day secret mission. Plus, can they find one of The Beatle's, George Harrison's, most famous guitars?

Hunt for the truth about the 1980s arcade game that's been linked to MK-Ultra, and join the search for a lost nuclear bomb. Plus, is Lake Michigan the final resting place for millions of dollars in stolen Confederate gold?

Laser weapons and tele-transporters would probably all be fitted to an alien spaceship. But what if they could be used by humans too?

Ancient astronaut theorists suggest that aliens have been guiding mankind in secret to bring about huge leaps in technological advancement.

Travel to the island nation of the Philippines, where the indigenous fighting style, Eskrima, was formed. From ancient forts in Cebu City to a modern military base in Manila, our hosts will learn the stick and knife techniques.

The English Channel during WWII was a strategic passageway separating two major enemies: Great Britain and Germany. Whoever controlled the Channel controlled the passage of warships and commercial vessels – basically all weapons supplies.

An exploration of Earth's cosmic neighbourhood. Looking beyond the borders of our solar system, what's nearby in our galaxy? How did Earth's place in the galaxy make it the perfect place for the development of advanced life?

We aim for the stars and find out why unwanted battleship guns allow the United States to gain vital information about the borders of space.