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Lightning Strikes, Human Hibernation, Chinese Anchors: A man survives six lightning strikes, while a toddler is frozen solid and thawed unharmed.

Alleged sightings of leprechauns and fairies are nothing new in Ireland. Experts debate whether these Celtic creatures are fact or fiction.

Experts investigate if a mysterious caller had inside knowledge about the assassination of President John F Kennedy.

Could history's most powerful men know more about extra-terrestrials than us? Experts explore the complex relationship between presidents and aliens.

Experts scrutinise the engineering behind the Egyptians' Sphinx and pyramids. Could this advanced civilisation have received extra-terrestrial help.

Tasmania, New Zealand and the Bass Strait: Investigating the disappearance of pilot Frederick Valentich, whose last transmission gives an account of what he experienced.

In 1993, a teenage girl walking her dog in Shropshire, England, witnesses a cylindrical object in the sky. School kids in Florida report multiple UFO sightings in 1967.

Dozens of witnesses report seeing a fiery object falling through the Pennsylvania sky in 1965. In 1997, Phoenix residents claim to spot boomerang-shaped UFOs above their homes.

Andy explores Wiltshire's mysterious megaliths and barrows, visits a medieval meadery and encounters a religious pilgrimage at the site of a freshly made crop circle.

A look at one of Scotland's most popular paid tourist attraction. With a slew of sieges to its name, it is no surprise that the site boasts some formidable defences. (1 of.

Aerial images reveal a strange dark stain covering a coastal town.

Drones reveal what is left of Henry Ford's suburb in the Amazon, while clues to what killed a once-vibrant Pennsylvania mining town is discovered.

Take a closer look at the working conditions of a miner in Indonesia, visit the Petrifying Well in England and tour a village where the houses are simply holes in the ground.

Lightning Strikes, Human Hibernation, Chinese Anchors: A man survives six lightning strikes, while a toddler is frozen solid and thawed unharmed.

Paranormal experts and skeptics explore the mysterious world of psychics. Is it a talent, a supernatural gift or a hoax.

What happens when people take their numerophobia too seriously? Experts investigate why certain numbers incite fear and panic in people.

Aerial images reveal a strange dark stain covering a coastal town.

At Mexico City's Templo Mayor, archaeologists uncover a 15th-century tower of 600 skulls, revealing new insights into Aztec sacrifice and ritual.

From a secret underground military facility in Greenland to a grisly collection of human remains in the Andes, explore more secrets in the ice.