Investigating tales of a humanlike beast with reptilian skin, that has reportedly been terrorising Flatwoods, West Virginia using a strange flying craft.

Seven years after the alleged end of the Templars, signs the knights were rising again appear in Portugal.

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.

Some of the world's leading scientists look beyond the borders of our solar system to explain what's nearby in our galaxy, the Milky Way.

Cutting-edge technology gives an insider's look at the subterranean city built within Churchill's secret bunkers during the Second World War.

The Annihilator: Relive Hannibal's three dramatic victories in an exploration of his epic career and hatred of Rome.

Could the Bible contain contradictions, or hidden meanings, that challenge our beliefs about what is right and wrong regarding human sexuality?

Might the United States military really have a secret space programme? And if so, are we preparing for a space-based war with other nations... or other species?

Investigating tales of a humanlike beast with reptilian skin, that has reportedly been terrorising Flatwoods, West Virginia using a strange flying craft.

Seven years after the alleged end of the Templars, signs the knights were rising again appear in Portugal.

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.

Some of the world's leading scientists look beyond the borders of our solar system to explain what's nearby in our galaxy, the Milky Way.

Cutting-edge technology gives an insider's look at the subterranean city built within Churchill's secret bunkers during the Second World War.

The Annihilator: Relive Hannibal's three dramatic victories in an exploration of his epic career and hatred of Rome.

Could the Bible contain contradictions, or hidden meanings, that challenge our beliefs about what is right and wrong regarding human sexuality?

Might the United States military really have a secret space programme? And if so, are we preparing for a space-based war with other nations... or other species?

Investigating tales of a humanlike beast with reptilian skin, that has reportedly been terrorising Flatwoods, West Virginia using a strange flying craft.

Seven years after the alleged end of the Templars, signs the knights were rising again appear in Portugal.

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.

Some of the world's leading scientists look beyond the borders of our solar system to explain what's nearby in our galaxy, the Milky Way.

Cutting-edge technology gives an insider's look at the subterranean city built within Churchill's secret bunkers during the Second World War.

The Annihilator: Relive Hannibal's three dramatic victories in an exploration of his epic career and hatred of Rome.

Could the Bible contain contradictions, or hidden meanings, that challenge our beliefs about what is right and wrong regarding human sexuality?

The Forbidden Zones: Experts question whether the truth of our alien past could be buried in areas that, due to warfare or instability, are off-limits to exploration.

The team investigates reports of aggressive and territorial packs of sasquatch in the Sierra Nevada Mountains.

New. Treasure hunter Hamilton White and friend Carl Cookson have an amazing hoard of relics - believed to have belonged to the Knights Templar. Can they prove their provenance?

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

Is it true that in space nobody can hear you scream? Find out if the famous quote from Alien is true and discover the strange sounds made by the sun and stars.

The team battle against a typhoon while trying to prove that the unique formation of rocks they have found could be a secret entrance into the mountain.

The ancient Greeks invented philosophy, democracy, and... robotics? Check out these 10 incredible inventions from the dawn of civilisation.

Giorgio Tsoukalos heads to Peru to investigate whether the strange symbols covering its desert floor are key to proving aliens once visited Earth.

The Forbidden Zones: Experts question whether the truth of our alien past could be buried in areas that, due to warfare or instability, are off-limits to exploration.

The team investigates reports of aggressive and territorial packs of sasquatch in the Sierra Nevada Mountains.