Science Channel HD

Desperate signs from lost veterans in Vietnam; a fleet of large ships stranded in the middle of a vast desert; strange walls stretching vast distances across Northern California.

A strange structure is discoverd in Mongolia; bizarre rings in Spain could lead to the lost city of Atlantis; a large floating island is on a collision course with New Zealand.

Satellites locates strange spiral markings in the remote African desert; a weird deadly black blob is threatening the Florida Keys; something large is found deep beneath the ice of Antarctica.

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.

In a special tournament, Battlebots Team USA takes on bots from around the world in an international showdown of combat robotics.

Minotaur goes head to head with Subzero in an ultimate smackdown as the two bots try to secure their spots in the World Championship.

Brutus, Warhawk and End Game fight for a guaranteed spot, as the last round of bots put everything on the line to make it into the Sweet 16 round.

As shipwrecks of World War II continue to erode in the sea, their toxic cargoes continue to pose a catastrophic threat; now, experts use cutting-edge tech to investigate and reveal the potential impact of these noxious underwater dangers.

For over a century, the stories and wrecks of HMS Hampshire and HMS Vanguard continue to be shrouded in mystery; two research teams are granted special access to investigate and uncover what happened to these WWI warships in their final moments.

The wreckages of three German U-boats are eroding at the bottom of the sea along with the stories behind their disastrous fate; now, a team of maritime archaeologists race to locate the submarines and solve the mystery behind their deadly demise.

The aerial bombardment of the Japanese fleet and the torpedo strike of the Wilhelm Gustloff are two of the most shocking attacks of WWII; expert divers explore these underwater graveyards for new evidence of these maritime conflicts.

The remains of five warships could reveal new insights into how the nuclear arms race changed the world forever; using 3-D sonar scan technology, an expert team of marine scientists investigate the catastrophic effects of atomic explosions at sea.

More than 50 massive warships were lost in a matter of hours in the Scottish natural harbor of Scapa Flow during World War I; now, marine archaeologists use cutting-edge technology to explore one of the greatest acts of defiance in wartime history.

The USS Arizona and the HMS Hood were two of the most powerful warships in history, but their weaknesses paid a fatal price; experts investigate evidence that may reveal why the age of the battleship has come to a sudden and violent end.

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.

As the Nazis plot the beginning of their empire, Heinrich Himmler transforms the ruins of a German castle into a mysterious Nazi complex.

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.

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.

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