The ancient Greeks invented philosophy, democracy, and...robotics? From an ancient death ray constructed by Archimedes to Heron's automatic doors, which of these ancient Greek technologies will prove to be the most advanced?

In this series, renowned underwater archaeologist and adventurer Barry Clifford, along with a crack team of on-land explorers and experts, attempts to solve a mystery that dates back hundreds of years.

A towering structure with an explosive past; a deserted cityscape; a mysterious top-secret facility; a vast Nazi construction. Now they lie disused, contaminated and dangerous. But who built them? And why were they abandoned?

What if the Moon is not the natural object we believe it to be? Unidentified lunar objects in NASA photography may point to extra-terrestrial structures on the moon, and possibly evidence of what lies beneath the surface.

An exploration of the shapes and patterns seen when observing planets and galaxies, and how the form of the universe itself was created.

Wolf-like beasts are the stuff of legends, but recently uncovered film footage may prove something frightening is out there. Head into the isolated forests of the Midwest to search for this creature and analyse evidence to finally end this mystery.

In WW2, Suffolk was home to 32 airfields that served as stations for US bombers. Suggs and Stephen hunt for relics of the visiting aircraft.

On alien planets, they rain from the sky as scalding iron. They're so rare in the Universe, they almost don't exist, but these are the magical liquids of our Liquid Universe.

The ancient Greeks invented philosophy, democracy, and...robotics? From an ancient death ray constructed by Archimedes to Heron's automatic doors, which of these ancient Greek technologies will prove to be the most advanced?

In this series, renowned underwater archaeologist and adventurer Barry Clifford, along with a crack team of on-land explorers and experts, attempts to solve a mystery that dates back hundreds of years.

A towering structure with an explosive past; a deserted cityscape; a mysterious top-secret facility; a vast Nazi construction. Now they lie disused, contaminated and dangerous. But who built them? And why were they abandoned?

What if the Moon is not the natural object we believe it to be? Unidentified lunar objects in NASA photography may point to extra-terrestrial structures on the moon, and possibly evidence of what lies beneath the surface.

An exploration of the shapes and patterns seen when observing planets and galaxies, and how the form of the universe itself was created.

Wolf-like beasts are the stuff of legends, but recently uncovered film footage may prove something frightening is out there. Head into the isolated forests of the Midwest to search for this creature and analyse evidence to finally end this mystery.

In WW2, Suffolk was home to 32 airfields that served as stations for US bombers. Suggs and Stephen hunt for relics of the visiting aircraft.

Pulsars are tiny - only a few miles across - but they spin as fast as a kitchen blender and sweep the sky with beacons of radiation that make them appear to flash on and off. Quasars are at the other end of the spectrum.

Behind every empire there is a central metropolis, driving expansion and governing the great empires that called them home. From the grandeur of Rome to the incredible Chinese city Xi'an, which ancient metropolis will take the crown as most renowned?

Considered the most powerful warship afloat, the USS Texas was commissioned in March 1914.

A devastated cliff-top ruin; an extraordinary tall tower; a concrete structure stranded at sea; a heavy metal monster in a field. Now they lie disused, contaminated, and dangerous. But who built them? And why were they abandoned?

Russia is the home of 'cosmism', a belief that human civilisation originated in the cosmos and is destined to return to space. But many believe the rise of communism led to a wall of secrecy surrounding extraterrestrial contact in Russia.

Utah housewife Peggy Layton has stored years worth of food in an underground shelter and zombie researcher Matt Mogk has developed his own survival plan including a stockpile of weapons specifically chosen to fend off a zombie attack.

John unveils the insides of refrigerators, stoves and a garbage disposal. He's slicing and dicing to find the secrets of our hottest, coldest and most dangerous kitchen machines.

Are the odds against you when you consult the Magic 8-Ball? Which toy car is fastest in a head-to-head race? And why does shaking erase an Etch-a-Sketch? John discovers the secrets inside the toys we never outgrew.

Stunning, newly colorised combat and newsreel footage plus personal memoirs take us to the heart of a battle that would be a catastrophic blow to both sides and leave a muddy graveyard across East Belgium.

Pulsars are tiny - only a few miles across - but they spin as fast as a kitchen blender and sweep the sky with beacons of radiation that make them appear to flash on and off. Quasars are at the other end of the spectrum.

Behind every empire there is a central metropolis, driving expansion and governing the great empires that called them home. From the grandeur of Rome to the incredible Chinese city Xi'an, which ancient metropolis will take the crown as most renowned?

Considered the most powerful warship afloat, the USS Texas was commissioned in March 1914.

A devastated cliff-top ruin; an extraordinary tall tower; a concrete structure stranded at sea; a heavy metal monster in a field. Now they lie disused, contaminated, and dangerous. But who built them? And why were they abandoned?

Russia is the home of 'cosmism', a belief that human civilisation originated in the cosmos and is destined to return to space. But many believe the rise of communism led to a wall of secrecy surrounding extraterrestrial contact in Russia.

Utah housewife Peggy Layton has stored years worth of food in an underground shelter and zombie researcher Matt Mogk has developed his own survival plan including a stockpile of weapons specifically chosen to fend off a zombie attack.

John unveils the insides of refrigerators, stoves and a garbage disposal. He's slicing and dicing to find the secrets of our hottest, coldest and most dangerous kitchen machines.

Are the odds against you when you consult the Magic 8-Ball? Which toy car is fastest in a head-to-head race? And why does shaking erase an Etch-a-Sketch? John discovers the secrets inside the toys we never outgrew.

Stunning, newly colorised combat and newsreel footage plus personal memoirs take us to the heart of a battle that would be a catastrophic blow to both sides and leave a muddy graveyard across East Belgium.

Pulsars are tiny - only a few miles across - but they spin as fast as a kitchen blender and sweep the sky with beacons of radiation that make them appear to flash on and off. Quasars are at the other end of the spectrum.