Biblical texts describe winged creatures carrying messages from the heavens. But are angels merely the product of the imagination - or do they really exist?

We go beneath the streets of Japan to see the latest technology that saves the city from the many natural disasters ready to strike. Head back in time to World War II to see how Hiroshima's underground offered protection from the most powerful bombs.

A new breed of tools allows man to face deadly forces once thought impossible. On this episode: a polar survival suit, a thermal imaging fire fighter mask, and a big wave surfing emergency vest.

The Egyptians left a remarkable legacy, and their monuments and great works of art still astound us today. In this episode, we reveal another surprising aspect of Egyptian life - their weapons of war, and their great might on the battlefield.

Relive the first battle in the conquest of the Promised Land, where a defector in Jericho helped the Israelites infiltrate the city, destroying it from the inside.

In 2008, witnesses in Needles, California, saw military helicopters carry away a glowing flying object. What was the government trying to hide? And could UFO clean-ups be common?

Marty's fascination is piqued when a fellow energy entrepreneur shares evidence that suggests his Utah ranch has been the Aztec hiding place of Montezuma's treasure for centuries.

Throughout history, many have believed that certain places, things, or even people can be tainted with dark curses. But can these mysterious curses really have the power to bring us harm? And if so, is it possible to understand their power?

Biblical texts describe winged creatures carrying messages from the heavens. But are angels merely the product of the imagination - or do they really exist?

We go beneath the streets of Japan to see the latest technology that saves the city from the many natural disasters ready to strike. Head back in time to World War II to see how Hiroshima's underground offered protection from the most powerful bombs.

A new breed of tools allows man to face deadly forces once thought impossible. On this episode: a polar survival suit, a thermal imaging fire fighter mask, and a big wave surfing emergency vest.

The Egyptians left a remarkable legacy, and their monuments and great works of art still astound us today. In this episode, we reveal another surprising aspect of Egyptian life - their weapons of war, and their great might on the battlefield.

Relive the first battle in the conquest of the Promised Land, where a defector in Jericho helped the Israelites infiltrate the city, destroying it from the inside.

In 2008, witnesses in Needles, California, saw military helicopters carry away a glowing flying object. What was the government trying to hide? And could UFO clean-ups be common?

Marty's fascination is piqued when a fellow energy entrepreneur shares evidence that suggests his Utah ranch has been the Aztec hiding place of Montezuma's treasure for centuries.

Throughout history, many have believed that certain places, things, or even people can be tainted with dark curses. But can these mysterious curses really have the power to bring us harm? And if so, is it possible to understand their power?

Biblical texts describe winged creatures carrying messages from the heavens. But are angels merely the product of the imagination - or do they really exist?

We go beneath the streets of Japan to see the latest technology that saves the city from the many natural disasters ready to strike. Head back in time to World War II to see how Hiroshima's underground offered protection from the most powerful bombs.

A new breed of tools allows man to face deadly forces once thought impossible. On this episode: a polar survival suit, a thermal imaging fire fighter mask, and a big wave surfing emergency vest.

The Egyptians left a remarkable legacy, and their monuments and great works of art still astound us today. In this episode, we reveal another surprising aspect of Egyptian life - their weapons of war, and their great might on the battlefield.

In a manoeuvre of strategic brilliance, Moses leads his people out of Egypt and lures the Egyptian army to a watery grave.

An encounter in the American heartland indicates a disturbing twist to the UFO phenomenon. The team follows a trail of explosive evidence connecting UFOs to the most destructive weapons in human history.

Hunting for the Lost Dutchman is usually a one-man journey, but Wayne Tuttle is partnering with a team of experts to follow a newly-revealed clue that could finally solve the 500-year-old mystery of America's most famous buried treasure.

For decades, the debate has raged as to what exactly UFOs really are. Theories have attributed them to everything from military aircraft to weather phenomena. The most controversial theory is they're ailen spacecraft. Could it be true?

Could aliens have helped humans build huge ancient structures? Experts ask whether standing stones in Carnac, France, were a GPS system for ancient spacecraft.

The Atacama desert is the driest place on Earth. Since human records of the area began, some places have never received rain. The soil is so dry that it has been used as a test bed for the Mars rovers.

Nazi loot. Roman coins. Viking artefacts. Spanish gold. These are just some of the priceless treasures that regularly pass through the hands of the world’s most prolific yet completely unknown treasure hunters, Hamilton White and Carl Cookson.

A storm is coming. Tomek is busy getting his equipment ready. Herkules heads to a music club for a party. Krzysztof’s team adds a new member, Bartek. Dorota negotiates the price of raw amber. The Formellas sail out to the sea to collect fishnets.

In a manoeuvre of strategic brilliance, Moses leads his people out of Egypt and lures the Egyptian army to a watery grave.

An encounter in the American heartland indicates a disturbing twist to the UFO phenomenon. The team follows a trail of explosive evidence connecting UFOs to the most destructive weapons in human history.

Hunting for the Lost Dutchman is usually a one-man journey, but Wayne Tuttle is partnering with a team of experts to follow a newly-revealed clue that could finally solve the 500-year-old mystery of America's most famous buried treasure.

For decades, the debate has raged as to what exactly UFOs really are. Theories have attributed them to everything from military aircraft to weather phenomena. The most controversial theory is they're ailen spacecraft. Could it be true?