Experts investigate ancient tales and accounts of robots, contemplating that if such sophisticated machines did exist in bygone days, what might have happened to them

Patterns in UFO and UAP sightings across the world. A strange formation is seen in the sky over the sleepy suburbs of Tinley Park, Illinois. The lights return for a second time almost to the date the following year

Ross hops from Portsmouth to Plymouth and explores a coastline littered with treasures. A bout of hypercapnia leaves him shaken after the dive of a 17th-century shipwreck

Alice Roberts sets off across Hadrian's Wall to reveal the forgotten story of the Roman Army's secret weapon in Britain - their cavalry. The programme also follows team of archaeologists and historical re-enactors as they attempt to re-stage a Roman cavalry tournament for a public display in Carlisle

Drones reveal what's left of Henry Ford's American suburb in the Brazilian jungle, clues to what killed a once-vibrant Pennsylvania mining town, an aerial glimpse of New York's forgotten ghost town and an Italian Renaissance reduced to dust

A waterlogged, mold-riddled Jeep Cherokee requires a major rescue after years of neglect, a while a snake-infested Plymouth Duster must be transformed from a reptile den into a show-stopping 10

A Packard filled with dead rodents must be taken from putrid to pristine to make a profit. A neglected 1989 Porsche Carrera covered in dirt and grime needs to be handled with care

Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers

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

Events of 1941, when Hitler invaded the USSR. Plus, Operation Barbarossa stalled as winter hits and Soviet resistance - fuelled by propaganda - turned the tide

A look at the Leopard Two, one of the best all-around Main Battle Tank today, combining great mobility, a superior gun and excellent protection

The Grumman Avenger, which was the most important carrier-based torpedo bomber on American and British carriers throughout the Second World War. They were also the biggest and heaviest carrier aircraft of the conflict

Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers

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

In 2018, Alaska suffered a powerful earthquake that led to threats of a tsunami. Though the tsunami never occurred, one notable result of the quake was the increase in UFOs observed in the skies. But how does seismic activity link to sightings?

Ross continues his diving quest in the crystal clear waters of the Red Sea off the coast of Egypt. It's a deeply personal journey as his grandfather fought in the North Africa campaign during ther Second World War

Alice Roberts shares the best archaeological discoveries of 2018, starting with the North of the UK and a preserved prehistoric village at the black Loch in Myrton. The programme also follows archaeologists uncovering a previously unknown Anglo-Saxon cemetery in Lincolnshire, and a major regeneration project in Salford, unearthing the largest jail in Georgian England. Cameras join the hunt for a lost Second World War reconnaissance Spitfire in Norway and enjoy privileged access to the conservation labs at Vindolanda Roman fort to see what really happens when the digging stops

Drones explore strange geological occurrences, unique man-made structures, curious creatures and lost civilizations. This episode focuses on mysteries found in desert landscapes, featuring a constant inferno in Turkmenistan, mysterious circles in the Namibian desert and secret electric blue ponds in Utah

The Old Testament's legendary lost places, such as the Tower of Babel, Sodom & Gomorrah and Mount Sinai, all seemingly vanished from the map