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What on Earth?

Season 4 2017 - 2018

  • 2017-10-18T03:00:00+01:00 on Science Channel
  • 45 mins
  • 15 hours, 0 mins (20 episodes)
  • United States
  • English
  • Documentary

Eyes in the sky. Watching us from space. Hundreds of satellites showing us the world like we've never seen it before. Capturing images which are breathtaking but bizarre. Objects and phenomena which defy explanation. Baffling phenomena seen from space, what on Earth are they?

20 episodes

4x01 Dracula's Tomb

  • Season Premiere

    2017-10-18T03:00:00+01:00 — 45 mins

Strange mounds in Transylvania might pinpoint the location of the tomb of the bloodthirsty tyrant believed to have inspired Dracula; a mysterious ancient city is discovered on a coral reef; images of a plane crash sets off a hunt for a drug lord.

4x02 Fountain of Youth Found?

  • 2017-10-25T03:00:00+01:00 — 45 mins

A strange structure shaped like a giant shark might point the way to a lost civilization's fountain of youth; a massive hurricane heads toward Florida but something unexpected is in its eye; bizarre marks across the eastern US leave experts baffled.

4x03 Mafia Ghost Ship

  • 2017-11-01T02:00:00+00:00 — 45 mins

A ghost ship with links to the mob suddenly appears on a California beach; strange markings could be a coded message that reveals a plot to overthrow the Queen of England; a lake believed to have magical healing powers holds clues to life on Mars.

4x04 Beasts of the Lost Jungle

  • 2017-11-08T03:00:00+00:00 — 45 mins

A ghost town covered in a strange, white powder emerges from a lake in Argentina; when a lost jungle is discovered in Africa, scientists embark on a dangerous mission to explore it; a declassified CIA image uncovers a bizarre, giant Soviet weapon.

4x05 Mystery of Fang Forest

  • 2017-11-15T03:00:00+00:00 — 45 mins

A strange forest of razor-sharp stones could be home of an undiscovered Hobbit-like humanoid species; when a man-made island mysteriously appears off the US coast, new evidence points to secret government experiments into psycho-chemical warfare.

4x06 Village of the Damned

  • 2017-11-22T03:00:00+00:00 — 45 mins

A forbidden island points to a strange South American town that locals claim was the home of Adolf Hitler. New data from NASA satellites might reveal a sunken lost continent in the Indian Ocean. A pit of bodies suggests fears of a zombie nightmare.

4x07 The Minotaur's Lair

  • 2017-11-29T03:00:00+00:00 — 45 mins

A strange lake in Transylvania is the home of an abandoned village—and a terrifying secret. When a labyrinth is discovered on an island once home to an ancient Greek civilization, experts investigate if it was the legendary home of the Minotaur.

4x08 Lost City of Goliath

  • 2017-12-06T03:00:00+00:00 — 45 mins

A lost city near Jerusalem might have been the home of Goliath. Bizarre underwater formations might point to a top-secret US weapons testing facility. A strange sighting in the Arctic could be a lost Nazi relic or the icy remains of prehistoric monsters.

4x09 Finding King Arthur

  • 2017-12-13T03:00:00+00:00 — 45 mins

An abandoned megacity in a remote jungle might be the home of an ancient treasure and a dark secret; when a mysterious circular stone structure is discovered in Scotland, experts investigate whether it's the fabled Round Table of King Arthur.

4x10 Treasures of Valhalla

  • 2017-12-20T03:00:00+00:00 — 45 mins

Evidence of human sacrifice for the Viking god Odin; shedding new light on Genghis Khan.

4x11 Hitler's Lost Gold

  • 2018-01-10T03:00:00+00:00 — 45 mins

New evidence might finally identify the hiding place of the billion-dollar Nazi gold train; a discovery of a long-lost settlement rewrites the history of the Vikings in North America; a blood-red river in Siberia points to catastrophic pollution.

4x12 Temple of Blood

  • 2018-01-17T03:00:00+00:00 — 45 mins

An ancient man-made volcano might reveal buried treasure and bloody human sacrifice; when NASA discovers a strange pattern in the Arctic ice, experts investigate if it has alien origins; a mystery in the Sahara might have a sinister explanation.

4x13 North Korea's Forbidden Islands

  • 2018-01-24T03:00:00+00:00 — 45 mins

Man-made islands are spotted near a North Korean missile facility. When something unexpected is found in a remote desert, experts investigate a lost city of giants. A strange discovery in Siberia could reveal a secret mission to the center of the earth.

4x14 Cannibals in the Ghost City

  • 2018-01-31T03:00:00+00:00 — 45 mins

An abandoned city in the African jungle may be haunted by the malevolent spirits of cannibals; Mount Vesuvius shows signs of an awakening, and the mafia could be to blame; experts investigate Adolf Hitler's secret Nazi UFO program.

4x15 Curse of Medusa

  • 2018-02-07T03:00:00+00:00 — 45 mins

Researchers investigate a strange glowing lake reported to turn things into stone; a structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant.

4x16 Nazi Stonehenge

  • 2018-02-14T03:00:00+00:00 — 45 mins

A mysterious Stonehenge-like structure in Russia may have links to the Nazis; experts uncover clues to a mega-tsunami with the power to devastate the United States; a huge lake appears in the Sahara overnight.

4x17 Hunting the Ark of the Covenant

  • 2018-02-21T03:00:00+00:00 — 45 mins

New discoveries lead investigators to a crypt rumored to hold the Ark of the Covenant; when a great white shark is killed, experts suspect a mysterious ocean monster; strange markings in the desert might be a tribute to an ancient spider god.

4x18 Forbidden City of Inca Gold

  • 2018-02-28T03:00:00+00:00 — 45 mins

Treasure hunters have searched for a lost Incan city of untold wealth for a century, but new technology might finally locate its riches; a strange mountain in Egypt sparks an investigation into Cleopatra's gems and the tomb of Alexander the Great.

4x19 Ghost Ship of Hell Island

  • 2018-03-07T03:00:00+00:00 — 45 mins

A ghost ship is found abandoned on a remote island that's home to one of the world's last uncontacted tribes. A strange labyrinth in Sicily might have a sinister connection to the Mafia. New evidence reveals a mysterious military compound in Russia.

4x20 Mayan Armageddon: The New Evidence

  • 2018-03-14T02:00:00+00:00 — 45 mins

New evidence might reveal how the Mayans vanished; when scientists investigate an abandoned settlement, they discover traces of ritualistic drug binges from the ancient world; a mysterious symbol in the desert points to a sex cult of millionaires.