Rob Nelson investigates rumors of a secret underground escape route used by the infamous gangster Al Capone. In Washington state, Rob tries to uncover who -- or what -- built a vast landscape of earthen mounds in Washington state.
Rob Nelson explores mysterious tunnels beneath Denver's airport, capitol building, and downtown to investigate rumors of a secret organization that operates below. In Ohio, he tries to uncover the ancient secrets of a mound shaped like a serpent.
Rob Nelson hunts for a legendary mass grave that could expose a dark secret of America's industrial past. High in the mountains, a giant lake is mysteriously disappearing, and Rob uses cutting-edge technology to find out why.
Rob Nelson examines a set of bizarre markings that suggest a violent clash between prehistoric beasts. In California, he investigates if a strange lake is a home to alien life.
Rob Nelson descends into a cave 30 feet beneath Texas in search of evidence of a mass extinction event. Then, he heads to Lake Michigan to investigate an unexplained, Bermuda Triangle-like phenomenon that has caused ships to disappear for centuries.
Rob Nelson heads to California to investigate a network for major fault lines that could set off an unprecedented mega-quake. Then, he explores a mysterious sinkhole that some believe is an endless pit to the center of the Earth.
Rob Nelson investigates a cluster of ancient ruins in New England that suggest Europeans arrived in the Americas almost 1,000 years before Columbus. Then, he heads to California where a dormant super volcano may be showing new signs of life.
Rob Nelson investigates the mysterious pattern of rocks at the bottom of Lake Michigan known as Underwater Stonehenge. At the notorious Alcatraz prison, Rob uses state-of-the-art technology in search of rumored escape tunnels.
Follow the production process of aluminum foil, snowboards, soft polymer contact lenses and bread and find out how each of these items is made.
Discover the processes involved in the manufacture of compact discs, mozzarella cheese, pantyhose, and fluorescent tubes.
Everyday objects often have fascinating roots. Find out how toothpicks, acrylic bathtubs, helicopters and beer are made.
Follow the production process of hearing aids, 3-D puzzles, rubber mats, and toilets.
Find out how copy paper, jeans, computers, and plate glass are made.
Nails and staples, safety glasses, fabrics, bicycles -- find out how each of these every day items are made and put together.
Follow the production from start to finish of kayaks, safety boots, electronic signs and breakfast cereals.
Find out how trucks, adhesive bandages, computer circuit boards, and liquors are made.
Close Encounters explores the countless UFO sightings reported from regions around the globe. Most sightings can be accounted for by weather patterns, flight schedules or extraordinary imagination. But a select few are still considered unsolved extraterrestrial puzzles.
Scientist Rob Nelson investigates the strangest underground locations in the world, using the latest technology and research to shed new light on the secrets that lie just beneath our feet.
Follow Digital Survivalist Andy Quitmeyer as he travels to remote parts of the world and hacks his way back to civilization using a hybrid of time-tested outdoor survival skills and a backpack's worth of wires, laptops and tracking devices.