Experts investigate ancient tales and accounts of robots. If these sophisticated machines did exist in bygone days, what might have happened to them?

Experts investigate whether the stories of a time when gods and otherworldly beings inhabited the planet are more than mere mythology.

Snooker legend Ronnie O'Sullivan and best friend Matt Smith cross the pond to explore America's 300-year history with pool. This time, the duo hit New York.

Patton whips a humiliated US unit into shape after defeat at Kasserine Pass, leading them into the Battle of El Guettar and declaring victory in North Africa by 1943.

Experts investigate whether rocket scientist Wernher von Braun might have found inspiration in technology found at the alleged UFO crash site in Roswell.

From Rasputin to the Nazis, many people throughout history are thought to have tapped into dark powers. Could they have been connecting with extraterrestrials?

The story of a man dressed in a suit and tie who hijacked a Northwest Orient flight bound for Seattle, Washington...and then vanished!

A look at the origins of the arms race, from the first use of nuclear weapons that ended WW2 through the duration of the Cold War.

Relive the great commander's historic trek towards Rome and discover how 40 elephants helped guide him to victory over the Roman legions.

Nearly 99 percent of the Earth's species have become extinct through natural selection. Find out how plants and animals, as well as humans, have evolved in order to survive.

The Colour of War is a compelling journey into World War II through the eyes and hearts of the people who lived it - the soldiers and the heroes.

The global nature of WWII proved as costly to servicemen as the enemy. From deserts to jungles, the extraordinary diversity of terrain and climate took its toll.

In the countryside of Wiltshire, England lies Rudloe Manor. A quaint manor house? Or epicentre of British UFO research since World War II?

Why do many ancient architectural wonders bear similarities despite being built by different civilisations? Could aliens have designed them?

Second part of the reinvestigation into cult leader Charles Manson, featuring never before broadcast recordings of the convicted murderer.

It is America's most secret organisation whose membership includes the most powerful men in the US and the world. Explore its secret history, rituals and reach.

A look at the accounts of modern-day alien abductees. Plus, could the bizarre Paracas skulls discovered by Julio Tello be of extraterrestrial origin?

Ancient alien theorists explore world mythology as they investigate whether extraterrestrials could be responsible for our existence.

Nearly 99 percent of the Earth's species have become extinct through natural selection. Find out how plants and animals, as well as humans, have evolved in order to survive.

With a single slingshot to the head, young David defeated the giant Goliath. But behind this famous tale lies a world of treachery, intrigue and political ambition.

Experts investigate whether alien life forms are thriving in our seas, following Russian cosmonauts' discovery of living plankton in space.

Crop circles are a global phenomenon, with 10,000 seen worldwide. But are these strange patterns simply a hoax or could they be proof of UFO activity?

Ancient Astronaut Theorists investigate how ancient aliens may have helped to guide and define mankind in the remote past.

Shaun meets a witness to one of the most significant cases of alien abduction ever and hears from a man who claims extraterrestrials cured him of cancer.

Experts investigate whether the US military has a secret space programme, as well as evidence suggesting alien races have been in conflict for millennia.

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.

At a small hilltop called Alesia in what is now central France, Julius Caesar, Rome's most brilliant general was pitted against the great Gallic chieftain Vercingetorix.

Afghanistan, 2009: When a group of US Army Rangers hit a roadside bomb and suffer multiple casualties, the team must come together to deal with the chaos of the mass casualty situation and cope with the loss of one of their teammates.