The vast Alaskan wilderness is known for mysterious disappearances, electromagnetic anomalies, stories of strange creatures and UFO sightings. Alaska's many mysteries could be due to a presence that is 'not of this world'

The unexpected things revealed by catastrophic disasters, featuring a medieval shipwreck that could reshape history and a Greek version of Atlantis that sank in a tsunami.

Why footprints discovered after a storm are altering English migration history by revealing evidence of early human activity that was previously hidden by the landscape. Such discoveries, often exposed by storm surges and erosion, are providing new insights into who was in England thousands of years ago and how they moved around. Plus, clues are unravelled to Maya political intrigue in Guatemala

Craig and space journalist Sarah Cruddas consider incidents over the US that it has been suggested are being covered up by the Pentagon. They take on the US Navy UAP videos - the 'Tic-Tac' footage, filmed from the USS Nimitz in 2004 off San-Diego, and the 'Go-Fast' and 'Gimbal' videos filmed between 2014 and 2015 off the East Coast in the Atlantic from the USS Theodore Roosevelt

Documentary considering whether the once seemingly far-fetched idea of the undead roaming the planet is actually closer to happening then previously thought possible

A team of experts investigates whether governments around the world are using weather control to incite the next global war, and possibly destroy the planet

Car builder Ian Roussel puts his blowtorch to metal as he goes back in time for a movie car build

Theorists offer compelling evidence suggesting that the ancient monolith thought to depict Egyptian pharaoh Khafra once represented an alien being

Investigating what the God Particle reveals about the origins of the world, and whether clues to its significance could have been left by ancient aliens

Runes are the letters of an ancient Germanic writing. Himmler made rune studies obligatory for SS officers as he believed they held mystical power and even placed protective runes on SS uniforms and buildings

The Messerschmitt Me 262 and the P-51 Mustang. Both are iconic Second World War combat machines with distinct strengths and weaknesses. The Messerschmitt 262 was the brainchild of genius designer Willy Messerschmitt and it became the first combat jet in history

The Douglas A-1 Skyraider, an aircraft capable of delivering the payload of a B-17, in a single post war air frame. The many variants of this single-piston engined fighter bomber helped dominate the air-to-ground attack role in Vietnam, earning itself quite a reputation

Theorists offer compelling evidence suggesting that the ancient monolith thought to depict Egyptian pharaoh Khafra once represented an alien being

Investigating what the God Particle reveals about the origins of the world, and whether clues to its significance could have been left by ancient aliens

There are recordings of possible UFO and UAP sightings across the world which have created patterns. This series investigates whether the Earth is being mapped by intergalactic forces. A team of multi-disciplined experts - believers and critics - investigates what these Alien Corridors are and what they mean. Washington State holds the United States' highest rates of UFO sightings per capita. With a new report made every 55 hours, why are UFOs choosing to hover here?

The actor travels dives even deeper on shipwrecks of major historical importance, exploring the remnants of some of the most significant moments in British history. He dives on shipwrecks around the British coastline to reveal some of the nation's murkiest and best-kept secrets, beginning with the site of Britain's most famous wreck - the Mary Rose. Ross is accompanied by dive master Neil Brock and tank expert and safety diver Mark Culwick

Alice Roberts joins archaeologists in the North as they uncover writing tablets, swords and domestic items left by Romans at Vindolanda during a time of British rebellion, before finding traces of a long lost monastery and pilgrimage site on the Scottish island of Iona. Meanwhile in the east of Scotland, a weapons hoard belonging to a wealthy Bronze Age warrior is unearthed

Cameras capture the world from fresh perspectives. This episode features strange markings in the remote reaches of Northern Finland, a Manhattan-sized mystery in the depths of a Vietnamese cave, secrets are no longer hidden in the Antarctic and a lost sky-high world in Mozambique

The infamous 1947 incident at Roswell, New Mexico, where a mysterious object crashed, sparking rumours of extraterrestrial life and government cover-ups. With new evidence emerging, the episode sheds light on the truth behind this historical enigma, via expert interviews and archival footage that brings the story to life