Might the stories of the Bible have their basis in ancient scientific fact? How big was the giant Goliath, and what was the tech of the sling that brought him down?

Mother Nature unleashes a swarm of tornados on a group of storm chasers. A delivery driver in Japan gets swallowed by the deadliest tsunami in Japan's history. And finally, a massive avalanche barrels into a small town in Norway.

Dogs are known as man's best friend, but now canines are striking fear into many who report attacks by predatory packs. Descended from wolves, domesticated dogs were used as protectors. Today, more and more dogs are returning to their wild roots.

In 479BC, the Spartans beat the Persians to avenge their defeat at Thermopylae. Discover what it was like to fight in one of history's most tactical battles.

The team investigates Nikola Tesla's final residence, The New Yorker Hotel, and find incredible evidence that it served as much more than a home to the controversial inventor.

As Douglas Latchford is accused of masterminding a multimillion-dollar racket in loot stolen from Cambodia's killing fields, museums and collectors face the grim reality that they're in possession of stolen property.

Why did Asiana flight 214, packed with passengers, suddenly crash land and cartwheel across San Francisco International Airport's runway? Three families of the dead want answers.

The team sets out to try and uncover the American armed forces' 'first response' to UFO encounters.

Might the stories of the Bible have their basis in ancient scientific fact? How big was the giant Goliath, and what was the tech of the sling that brought him down?

Mother Nature unleashes a swarm of tornados on a group of storm chasers. A delivery driver in Japan gets swallowed by the deadliest tsunami in Japan's history. And finally, a massive avalanche barrels into a small town in Norway.

Dogs are known as man's best friend, but now canines are striking fear into many who report attacks by predatory packs. Descended from wolves, domesticated dogs were used as protectors. Today, more and more dogs are returning to their wild roots.

In 479BC, the Spartans beat the Persians to avenge their defeat at Thermopylae. Discover what it was like to fight in one of history's most tactical battles.

The team investigates Nikola Tesla's final residence, The New Yorker Hotel, and find incredible evidence that it served as much more than a home to the controversial inventor.

As Douglas Latchford is accused of masterminding a multimillion-dollar racket in loot stolen from Cambodia's killing fields, museums and collectors face the grim reality that they're in possession of stolen property.

Why did Asiana flight 214, packed with passengers, suddenly crash land and cartwheel across San Francisco International Airport's runway? Three families of the dead want answers.

2012. The search of a flat in Munich, owned by elderly recluse, Cornelius Gurlitt, reveals how Gurlitts part-Jewish father, Hildebrand, struck a deal with the devil – and became an art dealer for Adolf Hitler.

The investigation has uncovered shocking video evidence, patterns, secret coordinates, and jarring eyewitness testimony about UFOs. The biggest question now is what are they, and are they dangerous?

In the heart of the Mediterranean, a peaceful island explodes with devastating force - it will be the biggest volcanic eruption in three and a half thousand years of recorded history.

Many times in human history, objects or forces from space have changed the course of life on earth. Many believe an asteroid played a role in the fall of the Roman Empire, and another asteroid might have destroyed Sodom and Gomorrah.

Ancient Astronaut theorists believe the global practice of mummification is not a coincidence, but proof that highly advanced extraterrestrials visited Earth in the distant past.

A modern jetliner crashes with 228 people on board. An oil refinery erupts in Utah, sending shockwaves through town and damaging over 100 homes. Manhole covers explode around the country, killing people and destroying property.

The story of a spacecraft crashing in Roswell, New Mexico, is the most famous case in UFO history. Now, a theory has emerged that there was more than one crash site.

An exploration of the shapes and patterns seen when observing planets and galaxies, and how the form of the universe itself was created.

2012. The search of a flat in Munich, owned by elderly recluse, Cornelius Gurlitt, reveals how Gurlitts part-Jewish father, Hildebrand, struck a deal with the devil – and became an art dealer for Adolf Hitler.

The investigation has uncovered shocking video evidence, patterns, secret coordinates, and jarring eyewitness testimony about UFOs. The biggest question now is what are they, and are they dangerous?

In the heart of the Mediterranean, a peaceful island explodes with devastating force - it will be the biggest volcanic eruption in three and a half thousand years of recorded history.

Many times in human history, objects or forces from space have changed the course of life on earth. Many believe an asteroid played a role in the fall of the Roman Empire, and another asteroid might have destroyed Sodom and Gomorrah.

Ancient Astronaut theorists believe the global practice of mummification is not a coincidence, but proof that highly advanced extraterrestrials visited Earth in the distant past.

A modern jetliner crashes with 228 people on board. An oil refinery erupts in Utah, sending shockwaves through town and damaging over 100 homes. Manhole covers explode around the country, killing people and destroying property.

The story of a spacecraft crashing in Roswell, New Mexico, is the most famous case in UFO history. Now, a theory has emerged that there was more than one crash site.

An exploration of the shapes and patterns seen when observing planets and galaxies, and how the form of the universe itself was created.

2012. The search of a flat in Munich, owned by elderly recluse, Cornelius Gurlitt, reveals how Gurlitts part-Jewish father, Hildebrand, struck a deal with the devil – and became an art dealer for Adolf Hitler.