Science Channel HD

The Avenue of the Sphinxes has now been unearthed in the biggest excavation in Egyptian history; using cutting-edge CGI, investigators reveal the hidden secrets of the sphinxes.

There's a lost city buried in the Sahara, and evidence reveals it's home to Nefertiti, Tutankhamun, and the forbidden god of an outlawed religion; experts use cutting-edge tech to uncover the secret doomsday that caused this place to disappear.

New discoveries may finally reveal the hidden meaning behind the strange texts of the Dead Sea Scrolls; as experts get closer to unmasking their author, they find clues of an ancient apocalypse.

Turning the spotlight on independent inventors who create astonishing inventions in their backyards; seeing a precision drone-catcher transform into a vacuum-powered railway and a homemade tank become a hot-air balloon.

Searching for people who live to wield their power; super-charged power trippers drop giant knives from cranes, take aim at explosive-packed refrigerators, and pull off the world's first skydive from a drone.

Inventors turn a bike into a car, soda into a fire extinguisher, and a jet ski into a Jetovator.

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

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.

When the Nazis took Ksiaz Castle in 1941, it wasn't for the view, and they got to work turning it into a fortress; secret staircases and elevators were built, while underneath, a vast network of tunnels was taking form.

A labyrinth of tunnels carved deep in the Polish mountains leads to the largest underground Nazi weapons development complex ever discovered.

Experts uncover a mysteriously abandoned underground complex that may have hid something very dark.

The skeletal remains of strange structures are clues to a mysterious research installation secretly built by the Nazis in Western Poland; experts investigate and uncover top-secret military fuel development with a catastrophic purpose.

As the Nazis embark on their dominate rise to power, a massive construction project secretly begins across Eastern Germany; using the latest tech, experts uncover an elaborate network of underground tunnels and bunkers with frightening ambitions.

A medieval castle-like complex in the remote mountains of Germany contains dark secrets to the Nazi's plan for world domination; experts investigate and uncover a nefarious training facility designed to groom elite Nazi personnel.

Guided missiles, the Wasserfall, and the potentially war-changing V2 were dreamed up and tested in a base in Peenemunde.

Stel and Jess trek to the Black Sea, where they investigate a 7,000-year-old skeleton buried in gold treasure, and uncover evidence of an ancient catastrophe that could be the basis for Noah's flood and the destruction of Atlantis.

Stel and Jess search underwater ruins off the coast of Greece that could be the ruins of Atlantis.

Stel and Jess investigate a mysterious Greek island where an advanced ancient civilization built a massive marble pyramid.

Stel and Jess dig into unexplored archeological sites along the Adriatic coast of Croatia where underwater relics from an ancient bridge system lead them to an age-old legend of a lost city and into a massive sinkhole that could swallow a city whole.

Stel and Jess sail to Sicily to explore Europe's largest active volcano; their investigation leads them to a hidden labyrinth and a mysterious underwater monolith.

Stel and Jess investigate cave paintings in Turkey that match an advanced civilization that built the world's oldest city; tracing the ancient migration to the coast, they discover a shoreline and ruins of a lost city right under their feet.

Stel and Jess dig into unexplored archeological sites along the Adriatic coast of Croatia where underwater relics from an ancient bridge system lead them to an age-old legend of a lost city and into a massive sinkhole that could swallow a city whole.