Science Channel HD

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

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.

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.

Legend has it that the Knights Templar discovered a great treasure in Jerusalem and may have brought it back to England.

Many ancient cultures allude to the existence of giants; tombs and skeletons of the alleged beings are discovered in Sardinia.

Adam and Jamie take a fan mail film and use it to dial in on a phone book fable; the rest of the team test a fishy tale of Hollywood pyrotechnics with their own big bang theories.

Adam and Jamie try to turn a conventional electric stun gun into a water-powered electric stun gun.

Jamie, Adam and Kari apply science to the theory that the more they drink, the more attractive they find the opposite sex.

Hollywood crash clichés; driving through glass; plowing throw traffic; firing an RPG at an SUV.

Michael Rooker ("The Walking Dead") helps the team test zombie myths; the more effective weapon, ax or gun; testing the strength of the living dead; outrunning or outsmarting a horde.

When a U.S. Air Force intercept aircraft chases after a UFO, it vanishes forever without a trace; a new investigation tries to uncover what caused this mysterious disappearance.

When someone picks up a radio distress call from a seven-year-old boy lost alone in the desert, authorities embark on a search-and-rescue mission to find him; as the hunt continues, the case becomes more and more mysterious.

A Russian radio station has broadcast a signal nonstop since the Cold War, and no one knows why; experts use hi-tech methods to investigate what it is and what might happen if it ever stops.

When a powerful radio beam originating from deep space is detected by experts on Earth, some suspect it's hard evidence of extraterrestrial life; new investigations into this shocking signal might reveal the truth.

When two experts build their own radio-listening station to intercept the secret communications of American and Soviet astronauts, they capture traces of a haunting voice that may be a lost Russian cosmonaut.

Experts use cutting-edge technology to investigate a mysterious phenomenon at the tomb of a 3,000-year-old Egyptian pharaoh.

Some believe the fire on Apollo One that killed three astronauts was a top-secret cover-up, and a team of experts investigates if this disaster was a tragic accident or part of a conspiracy to fake the moon landing.

A team of experts investigates if there was a conspiracy to fake the moon landing, and uncovers a secret report on hundreds of Nazis involved in the Apollo space program.

Confidential CIA files reveal a top-secret war for space between the US and the Soviets, and a team of experts investigates if new discoveries about American espionage during the Apollo program provide evidence of a conspiracy.

Apollo 11's lunar module nearly killed Neil Armstrong during training, and some believe this close-call could explain a conspiracy to fake the moon landing; investigating if dangers that the Apollo 11 crew faced were motive for a cover-up.

The NASA tapes that recorded the Apollo 11 moon landing are missing, and some believe their disappearance is part of a cover-up to hide the truth; experts use cutting-edge tech to hunt for this lost evidence and shed light on a possible conspiracy.

Some believe that the moon's waving American flag is the smoking gun that NASA faked the moon landing, and as a team of experts investigates this strange piece of evidence, the trail leads all the way to some of Hollywood's biggest names.

Following the inside story of NASA engineers as they race to build and launch the rocket, Artemis I, as it prepares for missions that will transport humans to the moon, then launch a journey to Mars and beyond.

The NASA tapes that recorded the Apollo 11 moon landing are missing, and some believe their disappearance is part of a cover-up to hide the truth; experts use cutting-edge tech to hunt for this lost evidence and shed light on a possible conspiracy.