The world's top 10 mysterious devices, from strange, grooved disks found in a cave in China to an ancient Greek computer to an incredible crystal skull unearthed in Mexico

Unexpected things revealed by catastrophic disasters, featuring a submerged funerary complex in Greece, ancient mammal footprints preserved by a Turkish volcanic eruption and North American fossils from the post-dinosaur era

A Bronze Age village, a Notre Dame fire and a 19th-century grave reveal ancient lifestyles. Tar pits showcase extinct mammals and shed light on prehistoric climate change

Craig joins forces with space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. Here the duo recall the infamous Rendlesham Forest incident of 1980. The sightings occurred just outside RAF Woodbridge, Suffolk, which was used at the time by the United States Air Force

After the successes of animal cloning, experts assess when human cloning may become possible

Experts ask if the bigfoot - a half-man, half-ape - is simply a figment of the imagination, or if he is being hidden from the public eye

Car builder Ian Roussel takes a youthful approach to an old but precious project

Giorgio Tsoukalos examines the notion that extraterrestrials could have left clues to the universe's mysteries. Experts investigate cryptic puzzles that might have been placed by ancient aliens

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

Documentary exploring the story of the Second World War. The first episode retraces the beginning of the German invasion of Poland and the segregation of Jewish people

The sinister role that planners, designers, architects and builders played in shaping the Second World War, thus helping Adolf Hitler retain power. In his role as Adolf Hitler's favourite architect, Albert Speer was a central figure in the Fuhrer's inner circle and helped cement his position

The Yakovlev Yak-3, a Second World War Soviet fighter that was regarded for its performance at low altitudes and its agility. It was one of the most successful Soviet aircraft designs of the war

Giorgio Tsoukalos examines the notion that extraterrestrials could have left clues to the universe's mysteries. Experts investigate cryptic puzzles that might have been placed by ancient aliens

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

Professor Alice Roberts follows archaeologists as they unearth Britain's most spectacular iron-age grave, a chariot burial in East Yorkshire. The programme also follows two other archaeological digs, an Iron-Age hill fort found in North Wales, and the remains of six roundhouses on the bed of Loch Tay in Perthshire, Scotland

Alice Roberts visits a secret location in the Cotswolds, which appears to be a high-status Anglo Saxon cemetery, where she finds a very precious and fragile artefact. A team from Cardiff University is called to the bone cave of Wales to investigate medieval bones protruding from a cliff face on the Welsh coast

In Northern Ireland, the graveyard of a Victorian workhouse sheds light on one of the most traumatic periods of modern Irish history, the Great Famine of 1845. A team from Sheffield University want to understand the lives of people who occupied a village near the famous caves at Cresswell Crags in Nottinghamshire, and near Lincoln, a revisit to an Anglo Saxon site near proves rewarding

How a lobster led archaeologists to the discovery of an 8,000-year-old neolithic settlement and witnessing the excavation of an Iron Age crouched burial at a secret location in Dorset. Also, Naoise Mac Sweeney visits a modern construction site as it gives up the secrets of an Elizabethan playhouse

The team follows the search for artefacts from the Second World War, joining marine archaeologists in the Solent as they raise a Fairey Barracuda divebomber. Elsewhere, a dig in the Lake District tells the moving story of the Windermere Boys, and in Aldbourne in Wiltshire, archaeologists search for personal items from the most famous American unit of the US army, 'Easy Company', who were stationed there in 1943 and 1944