Science HDTV (SCIHD)

Cataclysmic changes in ancient Egypt might have been caused by a set of international phenomena. The latest tech helps identify the supernatural culprit. What experts discover reveals a truth stranger than fiction. (Repeat).

A former CIA operative investigates new evidence of a top-secret group known as the Nightstalkers, a clandestine team of the world's best aviators involved in the assassination of Osama Bin Laden and other dangerous black ops. (Repeat).

A newly declassified document reveals the details of a top-secret government program created in the wake of the Kennedy assassination to go to extreme lengths to protect the president; a former CIA operative exposes the cutting-edge defenses now in place. (Repeat).

A top-secret government program might have proof that aliens have visited earth and a former CIA operative uses newly declassified documents and special access to investigate if the US military already has its hands on advanced, alien technology. (Repeat).

A former CIA operative investigates how superplanes will revolutionize flight and unleash a new lethal technology. A top-secret aviation program funded by a mysterious money trail could have built a plane that can travel nearly 4,000 miles an hour. (Repeat).

Newly declassified documents reveal that the US Space Force is the culmination of decades of top-secret military programs to weaponize the cosmos. Special access exposes the cutting-edge weapons and sci-fi defense systems behind real-life star wars. (Repeat).

An ex-CIA operative examines evidence of a top-secret group known as the Nightstalkers. (Repeat).

A former CIA operative investigates how superplanes will revolutionize flight and unleash a new lethal technology. A top-secret aviation program funded by a mysterious money trail could have built a plane that can travel nearly 4,000 miles an hour. (Repeat).

A newly declassified document reveals the details of a top-secret government program created in the wake of the Kennedy assassination to go to extreme lengths to protect the president; a former CIA operative exposes the cutting-edge defenses now in place. (Repeat).

An ex-CIA operative examines evidence of a top-secret group known as the Nightstalkers. (Repeat).

A top-secret government program might have proof that aliens have visited earth and a former CIA operative uses newly declassified documents and special access to investigate if the US military already has its hands on advanced, alien technology. (Repeat).

Jeremy Wade explores a ground-breaking investigation of aircraft debris that may be linked to the disappearance of Amelia Earhart. Also, Jeremy looks into the discovery of an ancient, well-preserved anchor at the bottom of the Mediterranean Sea. (Repeat).

Jeremy Wade explores the hidden and dark secrets behind a 150-year-old shipwreck off the coast of Sisal, Mexico, revealing an unknown and troubling maritime past. Also, a mysterious boiling river hidden deep in the heart of the Amazon is uncovered. (Repeat).

Myths and facts about speed cameras---and ways to foil them---are tested by Adam and Jamie, including license-plate protectors, avoiding the camera's field of vision, and driving really, really fast. Also: whether a defibrillator can start a fire. (Repeat).

Jamie and Adam try to put out a fire by yelling loudly at it; Kari, Tory and Grant examine four hypnosis hypotheses, including post-hypnotic suggestions and self-hypnosis. (Repeat).

Adam and Jamie attempt to teach a pair of untrained middle-aged Malamutes new tricks; Kari, Grant, and Tory investigate a myth about guard dogs. (Repeat).

Hot sauce; silver jewelry; cheese graters; traditional Mexican chairs. (Repeat).

Mayonnaise; game calls; traditional razor blades; butterfly safety razors. (Repeat).

Bush planes; corn tortillas; crankshafts and camshafts; aluminum bike wheels. (Repeat).

Piñatas; garbage trucks; folding kayaks; ceramic composite brake discs. (Repeat).

The technology behind the manufacture of Grammy Awards, bike lights, above-ground pools and foldable solar panels. (Repeat).

How LED stage lights and chemical tank trailers are constructed. Also, exploring the craftsmanship behind ornate stone floors and how apple cider is produced. (Repeat).

The production behind the fishing line and natural baking soda is discovered. (Repeat).

Storage sheds; industrial fans; parchment paper; and climbing walls. (Repeat).

A look at how carbon fiber car parts, hand dryers, fleece, and recycled polyester yarn are made. (Repeat).

Rum; police badges; car washes; pressure gages. (Repeat).

A look into how muffins; Tiffany reproductions; metal detectors; and aircraft engines are made. (Repeat).

Popcorn; adjustable beds; riding mowers; cultured diamonds. (Repeat).

The Leaning Tower of Pisa is the site of an 800-year-old mystery. Experts investigate the archaeological evidence using cutting-edge technology to reveal when it might finally fall over. (Repeat).

The Nazi airship Hindenburg exploded in a giant ball of fire, becoming a great catastrophe. Now, new technology might finally reveal what caused the fatal crash and if it was an act of sabotage. (Repeat).

Experts use cutting-edge tech to investigate the secrets of Vesuvius's second victim, which is one of the most perfectly preserved Roman towns on earth. When Pompeii was destroyed by an apocalyptic volcano in 79 AD, another Roman town was destroyed, too. (Repeat).

New discoveries might lead investigators to the legendary group of 300 Spartan warriors who died fighting off one million invading Persians. Using cutting-edge tech, experts reconstruct the lost battlefield to uncover the secrets of their last stand. (Repeat).

Discoveries reveal the secrets of the lost city of Baiae. (Repeat).

Featuring the Empire State Building, one of the wonders of the modern world. Cutting-edge tech helps experts explore it like never before, revealing the secrets of its construction and the mysteries hidden deep in its foundation. (Repeat).

New York is under attack as Hurricanes Ida and Ian unleash fury on innocent people with the death toll rising. Featuring how the latest science and technology can protect New York's eight million residents before the city is swept away by ferocious superstorms. (Repeat).

In 2011, a catastrophic nuclear disaster forced the immediate evacuation of Fukushima, Japan, and now, a team of scientists use hundreds of cameras to track and investigate the astonishing wildlife that now thrives in this deadly, radioactive environment. (Repeat).

New York is under attack as Hurricanes Ida and Ian unleash fury on innocent people with the death toll rising. Featuring how the latest science and technology can protect New York's eight million residents before the city is swept away by ferocious superstorms. (Repeat).

In 2011, a catastrophic nuclear disaster forced the immediate evacuation of Fukushima, Japan, and now, a team of scientists use hundreds of cameras to track and investigate the astonishing wildlife that now thrives in this deadly, radioactive environment. (Repeat).

Featuring the Empire State Building, one of the wonders of the modern world. Cutting-edge tech helps experts explore it like never before, revealing the secrets of its construction and the mysteries hidden deep in its foundation. (Repeat).

The Nazi airship Hindenburg exploded in a giant ball of fire, becoming a great catastrophe. Now, new technology might finally reveal what caused the fatal crash and if it was an act of sabotage. (Repeat).

Experts use cutting-edge tech to investigate the secrets of Vesuvius's second victim, which is one of the most perfectly preserved Roman towns on earth. When Pompeii was destroyed by an apocalyptic volcano in 79 AD, another Roman town was destroyed, too. (Repeat).

Featured: artist brushes; DEF tank heaters; game tables; and art glass wall sconces. (Repeat).

It is shown how foosball tables, Marseille soap, and Laguiole pocket knives are made. (Repeat).

Find out how flying water bikes, throttle position sensors, cinnamon cordial, and homemade rasps are made. (Repeat).

Featured: berets; pastis; and stationary bikes. (Repeat).

How the Bentley Mulsanne is made. (Repeat).

How the Chevrolet Camaro is built. (Repeat).

Neutrinos are the most mysterious particles in the universe, and they power some of the most explosive events in the cosmos. New discoveries reveal how these ghosts pass through objects undetected and why they could be the reason humans exist. (Repeat).

The team tells the story of where mankind and everything else came from. (Repeat).

Featuring a hidden, subterranean city built within the Rock of Gibraltar that was an immense fortress to control the seas during World War II. New discoveries reveal the secrets of a long-lost chamber with evidence of high-stakes espionage. (Repeat).

Explorers investigate the site that uncovers evidence of cannibalism among Ice Age denizens. (Repeat).

Featuring a strange, centuries-old labyrinth built into an abandoned quarry that was built by an eccentric millionaire, and no one knows why. Now, a new excavation into this mysterious 9,000-foot tunnel system might finally reveal its dark secrets. (Repeat).

A strange underground system known as the Black Cave is connected to a fairytale castle and was home to an infamous nobleman on the run from the law. Today, experts investigate the secrets he left here to discover new parts of this mysterious network. (Repeat).

Final confessions from WWI soldiers, found in a labyrinth of tunnels in France. (Repeat).

Featuring the world's largest labyrinth that holds some secrets from the Nazi occupation, Soviet revolution and Cold War. (Repeat).

Experts reveal what made the underground world of tunnels so terrifying. A vast system of tunnels built almost three thousand years ago was the site of the greatest battles of antiquity, and these disorienting passages could be the deadliest weapon in war. (Repeat).

Looking into the conspiracy about the Dead Sea Scrolls that might hold the location of a secret tunnel filled with treasure. (Repeat).

Jamie Theakston examines the tales from the annals of history. (Repeat).