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The Top Ten Mysteries of the Deep: Count down the top ten mysteries of the deep, from sunken continents to supposed proof of the lost city of Atlantis.

Explore whether the Gods of Greece including Zeus, Apollo and Poseidon, were actually extra-terrestrial visitors to Earth.

Every day, all around the world, in the most ordinary places, regular people are spotting UFOs.

Alice explores the stories of England's 'Golden Age', from Sir Francis Drake to the Spanish Armada, piracy, theft, and the slave trade.

Hugh and the team attempt to uncover a Roman fort, connected to Hadrian's Wall, that's buried beneath the back gardens of Benwell in Newcastle.

Observe the daily life of a garbage collector in Brazil, visit a cave village in China and take a closer look at the working conditions of a man working in the Egyptian desert.

The Opium Wars, the Taiping Rebellion and the Boxer Rebellion led to western domination over China. How did these momentous events impact on China today.

Check out the Chinese railway that runs through residential buildings, take a tour of a mysterious forest in Poland and explore amazing underground locations around the world.

Troy Landry teams up with a local archeologist and deckhand Pickle to search for remains of an ancient Native American civilization in the Louisiana swamps.

A mysterious structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant.

Follow the events of 1944, as the USS Enterprise and the Carrier Task Force push through the Pacific, hammering the enemy bases at Kwajalein and Truk Lagoon.

Looking at early metal warships, and how HMS Rattler's screw propeller in 1845 would lead to the revolutionary HMS Dreadnought in the 20th Century.

In the 21st century, UFOs have gone from fringe science to mainstream obsession. Are we getting closer to understanding the strange events in the sky.

For millennia, people have believed that everyday objects can possess hidden energy. These talismans are seen to provide protection and good fortune.

When your day job involves the oversight of missile silos, nuclear facilities or a military base, the last complication you want is a close encounter with a UFO..

Alice Roberts explores Glasgow's age of steam, from lethal diseases and industrial injury to genteel tea rooms.

Hugh and the team attempt to uncover a Viking burial ground hidden beneath Masham in North Yorkshire.

Check out the Chinese railway that runs through residential buildings, take a tour of a mysterious forest in Poland and explore amazing underground locations around the world.

Troy Landry teams up with a local archeologist and deckhand Pickle to search for remains of an ancient Native American civilization in the Louisiana swamps.

A mysterious structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant.

Follow the events of 1944, as the USS Enterprise and the Carrier Task Force push through the Pacific, hammering the enemy bases at Kwajalein and Truk Lagoon.

Looking at early metal warships, and how HMS Rattler's screw propeller in 1845 would lead to the revolutionary HMS Dreadnought in the 20th Century.

Since the Syrian civil war broke out in 2011, 400,000 have been killed in the conflict. Who is to blame for this and the terrible conditions in which its people live.

A Hells Angel proves his loyalty to the gang by leading a mass slaughter of their enemies - but he soon wrestles with his conscience and seeks an exit.

In the 21st century, UFOs have gone from fringe science to mainstream obsession. Are we getting closer to understanding the strange events in the sky.