Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.

From the planets to the stars and out to the edge of the unknown, history and science collide in a wondrous yet deadly adventure through space and time.

Take a trip to Yellowknife, Canada to experience one of the most dangerous careers around. In unfathomably cold conditions, truck drivers haul equipment and supplies to miners in the Canadian tundra in the dead of winter on a 350-mile highway of ice.

The investigation of the world’s most mysterious hot spot for UFO and “High Strangeness” phenomena with astrophysicist Dr. Travis Taylor who joins real estate tycoon Brandon Fugal, along with his team of scientists and researchers on Utah’s notorious Skinwalker Ranch. The team utilizes cutting edge technology to investigate the 512-acre property to uncover the possibly “otherworldly” perpetrators behind it all. With everything from mysterious animal deaths to hidden underground workings and possible gateways that open to other dimensions, witness the close encounters that go beyond conventional explanation, as the team risks everything to finally reveal the ultimate secret of Skinwalker Ranch.

A look at treasure quests across the globe—from pirates such as Blackbeard and outlaws like Jesse James, to Aztec gold, priceless historical artifacts from American history and sunken treasure ships—revealing new details and clues from past searches.

The best of American Pickers....

HISTORY’s longest-running series moves to H2. Modern Marvels celebrates the ingenuity, invention and imagination found in the world around us. From commonplace items like ink and coffee to architectural masterpieces and engineering disasters, the hit series goes beyond the basics to provide insight and history into things we wonder about and that impact our lives. This series tells fascinating stories of the doers, the dreamers and sometime-schemers that create everyday items, technological breakthroughs and manmade wonders. The hit series goes deep to explore the leading edge of human inspiration and ambition.

Pickers like Mike Wolfe and Frank Fritz are on a mission to recycle America, even if it means diving into countless piles of grimy junk or getting chased off a gun-wielding homeowner’s land. Hitting back roads from coast to coast, the two men earn a living by restoring forgotten relics to their former glory, transforming one person’s trash into another’s treasure.

Have you ever wondered what goes on behind the scenes of the most legendary monuments and powerful organizations in the United States? America’s Book of Secrets lifts the veil of mystery, giving you unparalleled access to historical narratives and insider information previously hidden from the public. Through in-depth research and exclusive channels, this series delves into a variety of familiar but enigmatic American institutions, from the FBI and the Pentagon to Fort Knox and Area 51. Go beyond the locked doors and security checkpoints of government agencies, famous landmarks and stealthy societies to glimpse the hidden worlds you were never intended to see.

Truckers on the worlds most deadliest roads.

The fascinating stories of the families behind the food that built America, those who used brains, muscle, blood, sweat and tears to get to America's heart through its stomach, those who invented new technologies and helped win wars.

Investigates a wide range of historically compelling topics and the mysteries surrounding each including the Titanic, D.B. Cooper, Roswell, John Wilkes Booth, and more. Fresh, new evidence and perspectives will be showcased, such as never-before-released documents, personal diaries and DNA evidence.

Each episode analyzes and passes verdicts on several seemingly impossible things “caught on film,” including giant beasts, UFOS, apocalyptic sounds, hairy humans, alleged mutants from the deep, conspiracies, and many other cases. Host and veteran journalist Tony Harris takes nothing for granted in a quest for answers, tracking down eyewitnesses, putting each photo or film through a battery of tests, calling out the hoaxes, and highlighting the most credible evidence in an attempt to better understand our world.

Utilizing a team of reputable professionals working alongside "The Secret of Skinwalker Ranch" veterans, this series explores other sites of unusual activity and "high strangeness" phenomena in an effort to discover if the activity documented on Skinwalker Ranch is not only real, but pervasive.

The “Pawn Stars” are hitting the road to visit some of America’s most exciting places in search of historical finds and impressive collectible objects. Each two-hour episode follows the stars as they step out of the World Famous Gold & Silver Pawn Shop in Las Vegas to connect with fans in eight different cities and acquire some of the most remarkable items imaginable.

This seven-hour miniseries explores the foundations of the greatest empires of all time and the incredible stories of Alexander the Great, Julius Caesar and Cleopatra.

Hardcore survivalists are put by themselves in the Vancouver Island wilderness, without camera crews, teams, or producers – on a single mission to stay alive for as long as possible.

Profiles of some of the men who choose to live off the grid in the unspoiled wilderness, where dangers like mudslides, falling trees and bears are all part of everyday life.

Inspired by the iconic 1970s’ franchise, this series examines unexplained phenomena from all over the world.

Adam Richman hits the road on a quest to relive his favourite decade, one delicious bite at a time.