Best-selling author Brad Meltzer and the team search for the true meaning of the mysterious Georgia Guidestones. Often called America's Stonehenge, this granite monument is located on a remote hilltop outside Atlanta. Brad and the team examine the multilingual messages carved into the stones for any clues to the monument's anonymous creator, who's known only by the pseudonym -- J.C. Christian. The Decoded team checks out rumors that the Guidestones are really the work of a secretive religious sect called the Rosicrucians, who've been accused of practicing alchemy and mind control.

Every now and then a researcher will discover a historical enigma, an unproven rumor, a story with a puzzling outcome. Such encounters are an irresistible challenge for Brad Meltzer, the #1 New York Times best-selling author. What if I told you Fort Knox was empty? Buddy, Scott and McKinley travel to Kentucky to investigate the history of the legendary vault, and discover the devastating impact it would have on our economy and our pocketbooks if the gold were gone. Fort Knox has not been audited since 1974, but does that mean the government is shielding its empty pocket book from the prying eyes of the American public, or is the privacy in place to protect a different secret altogether?

Does Mount Rushmore, one of America's greatest icons of Democracy have a more sinister meaning? Buddy, Mac and Scott travel to Big Sky country to decode the intended message possibly hidden within this great American symbol.

As the guys are winding down their trip through the South, Danielle finds them the mother lode of rare motorbike parts in an old warehouse packed with new vintage Harley stock. Can they convince the sentimental and savvy owner Billy to part with some choice items? The guys make an incredible discovery guaranteed to impress their friend and NASCAR champion Ryan Newman. Plus there's plenty more finds on the 11-acre property littered with racecars and jam-packed outbuildings. And, back in Iowa, Mike and Frank have a field day scouring an incredible collection of one of their decorator clients. But will they spend all their money before coming across the real treasure?

Best-selling author Brad Meltzer and the team search for the true meaning of the mysterious Georgia Guidestones. Often called America's Stonehenge, this granite monument is located on a remote hilltop outside Atlanta. Brad and the team examine the multilingual messages carved into the stones for any clues to the monument's anonymous creator, who's known only by the pseudonym -- J.C. Christian. The Decoded team checks out rumors that the Guidestones are really the work of a secretive religious sect called the Rosicrucians, who've been accused of practicing alchemy and mind control.

Throughout history there have been legendary artifacts that have captured the imagination of adventurers everywhere. While belief in their existence seems to fly in the face of reason and science, there have been those who have devoted their lives to their discovery. One man has looked for some of these remarkable treasures. He is Indiana Jones--professor of archeology and an adventurer who has uncovered some of the world's greatest mysteries. But Dr. Jones is just a fictitious character and it's widely assumed that the artifacts he searched for were also figments of a writer's imagination. But were they?

Where in Washington D.C. is the nation's most incredible treasure chest? It's a library unlike any other in the world--the U.S. Library of Congress. Explode the myth that this 200-year-old institution is simply "where members of Congress borrow books." Viewers are taken beyond the magnificent Jefferson Building Great Hall into the secret vaults where more than 600 miles of shelves hold 130 million items, many of them priceless treasures--from George Washington's hand-written diaries to Galileo's first images of the moon to the original camera film of the movie Frankenstein. See how a staff of 4,000 catalogues protects and preserves these treasures and distributes them globally via a new World Digital Library.

Join us for an exploration of the technological innovations that have made extreme sports a reality. The world's best extreme athletes, designers, manufacturers, and engineers explain and demonstrate why the gadgets, gear, and technology of these sports have captured the public's imagination and revolutionized the sporting industry. Sports covered include surfing, skateboarding, snowboarding, in-line skating, street luge, wakeboarding, sport climbing, BMX biking, and sky surfing. (1-hour version)

Rick and his crew must launch a rapid refurbishment when the Pawn Stars steer a 1950s Atomic Missile pedal car to the shop. Can they follow the tough trajectory of this hazardous heat-seeker, or will this mission miss its mark? And later, a client brings in a 1930s fare box, once used on public transportation. Can the crew keep this transformation on track, or will this ride-on restoration go off the rails?

When a client brings in his father's 1954 Bantam tractor, Rick must mend this latent lawn wrangling machine. Can he successful salvage this project piece by piece, or will this farming fix up ultimately fail? Later, the guys have a mechanical mystery on their hands when a client brings in an early 1900s air brake tester for trains. Can the crew puzzle out this choo-choo contraption, or will this railroad relic get derailed?

For centuries, science and faith have been polarized on some of the most fundamental questions in the universe, sometimes with deadly consequences. But as mankind seeks to answer the ultimate question--whether God exists--religion and science have joined in an unlikely alliance. Can new scientific discoveries and digital age technology reveal tangible proof of God? From the far reaches of the cosmos to the inner working of the human mind, scientists and believers around the world are using science to open new frontiers in this ultimate quest.

Nikola Tesla's bizarre vision of the future brought him failure, but his genius electrified the world. Travel to Niagara Falls, where in 1893, Tesla installed his new system of Alternating Electrical Current known as AC--the same power we use today. Uncover the forgotten ruins of Tesla's dream experiment---a huge tower on Long Island Sound he hoped would wirelessly power the world. Radar, death rays, invisibility devices and earthquake machines: Tesla claimed to have created them all. More than 100 years ago Tesla foresaw the need for alternative energies like geothermal and solar.

Informational programming.

Informational programming.

Informational programming.

Informational programming.

Informational programming.

Informational programming.

Throughout history there have been legendary artifacts that have captured the imagination of adventurers everywhere. While belief in their existence seems to fly in the face of reason and science, there have been those who have devoted their lives to their discovery. One man has looked for some of these remarkable treasures. He is Indiana Jones--professor of archeology and an adventurer who has uncovered some of the world's greatest mysteries. But Dr. Jones is just a fictitious character and it's widely assumed that the artifacts he searched for were also figments of a writer's imagination. But were they?

Where in Washington D.C. is the nation's most incredible treasure chest? It's a library unlike any other in the world--the U.S. Library of Congress. Explode the myth that this 200-year-old institution is simply "where members of Congress borrow books." Viewers are taken beyond the magnificent Jefferson Building Great Hall into the secret vaults where more than 600 miles of shelves hold 130 million items, many of them priceless treasures--from George Washington's hand-written diaries to Galileo's first images of the moon to the original camera film of the movie Frankenstein. See how a staff of 4,000 catalogues protects and preserves these treasures and distributes them globally via a new World Digital Library.