Science Channel HD

The coliseums of Rome were brutal theaters of spectacle and death that helped control the sprawling Roman empire; now, archaeologists uncover the engineering secrets behind these majestic structures to reveal the truth behind the ancient Roman world.

The downfall of the powerful Maya city of Palenque continues to mystify archaeologists today; now, investigators gain rare access to explore lost tombs to reveal the truth behind this legendary city and the mystery behind its enigmatic queens.

The clifftop ruins of Tintagel Castle are shrouded in a tumultuous history and believed to be the birthplace of King Arthur; experts use cutting-edge tech to unlock the secrets of this ancient structure and reveal the truth behind a legendary ruler.

The ancient city of Samarra contains a series of medieval structures that hold secrets to one of the world's greatest empires; archaeologists use pioneering technology to investigate its astonishing rise to power and reveal its monumental downfall.

Apollo 12 astronauts bring back something alive from the moon; NASA tracks an asteroid heading towards Earth but make an incredible discovery.

Cosmonauts are trapped in a capsule in a frozen lake; a NASA scientist investigates the Hindenburg; the full moon affects experiments.

Astronaut Leroy Chiao's spacewalk is interrupted by bright lights flying past; a flying saucer is photographed from the Apollo.

New astronomical research is beginning to reveal an invisible scaffold of dark matter known as the Cosmic Web, an intergalactic network that transformed the universe from a chaotic Big Bang into the structured beauty of the present day cosmos.

Cosmic rays capable of destroying human DNA are hurtling through outer space like subatomic bullets, causing space crews radiation damage.

Céline and Fabien Cousteau use cutting-edge tech to investigate one of the most credible UFO sightings in history, when a strange alien craft was spotted crashing into the ocean; what they discover might reveal evidence of extraterrestrial contact.

A dangerous stretch of water in the Mediterranean is the resting place of an infamous sunken ship, and using the latest tech, Céline and Fabien Cousteau investigate if it was deliberately attacked by spies on a top-secret mission.

Céline and Fabien Cousteau use cutting-edge tech to hunt for a long-lost shipwreck in the Bermuda Triangle, and if their top-secret clues are right, they might uncover new evidence that explains the disappearances in this deadly and mysterious place.

Brand-new evidence reveals the secrets of a Nazi program to build a nuclear bomb; using cutting-edge science and technology, experts uncover classified files that reveal how close Hitler came to this terrifying super weapon.

A nuclear submarine goes missing while spying on Soviet maneuvers, and its wreckage is found on the ocean floor.

Beneath Yellowstone National Park is one of the world's largest active volcanoes, and it's poised to erupt at any moment; experts use seismic technology and visual imaging to reveal its catastrophic threat.

Using cutting-edge forensic analyses, some of the world's leading investigative experts uncover the stunning truth behind compelling mysteries from ancient times to the recent past.

Three inmates are said to have escaped from Alcatraz prison, but even today, it's never been proven; new evidence might finally crack this notorious cold case, as experts use forensic science and cutting-edge technology to investigate fresh leads.

Adolph Hitler disappears from the world in an apparent suicide at the end of World War II, but theories of his possible escape continue to circulate; experts use forensic science to examine remains that could finally solve the mystery of his fate.

No one knows how Harry Houdini pulled off his death-defying escapes, but, now, a team of experts investigate his water torture illusion to reveal the secrets of this mysterious feat.

The bullet catch is one of the deadliest tricks in magic history, and no one knows if Houdini pulled off the illusion; a team of experts re-creates the famed trick to uncover how Houdini could have pulled off the feat that killed many of his peers.

One of Houdini's greatest escapes might have been a deep-cover conspiracy to spy for the American government, and experts recreate his break from a Siberian prison transport to investigate the mysteries behind this incredible feat.

Houdini's mysterious sudden death might not have been an accident, and experts re-create his buried alive escape to reveal how this deadly feat was performed and if the great magician was killed by forces far more insidious.

The bullet catch is one of the deadliest tricks in magic history, and no one knows if Houdini pulled off the illusion; a team of experts re-creates the famed trick to uncover how Houdini could have pulled off the feat that killed many of his peers.