Alaska... Here, in this vast and spectacularly beautiful land teeming with abundant wildlife, discover the "Spirit of the Wild." Experience it in the explosive calving of glaciers, the celestial fires of the Aurora Borealis. Witness it in the thundering stampede of caribou, the beauty of the polar bear and the stealthful, deadly hunt of the wolf pack.

Werner Herzog's documentary film about the "Grizzly Man" Timothy Treadwell and what the thirteen summers in a National Park in Alaska were like in one man's attempt to protect the grizzly bears. The film is full of unique images and a look into the spirit of a man who sacrificed himself for nature.

Hunters have disappeared from wildlands without a trace for hundreds of years. David Paulides presents the haunting true stories of hunters experiencing the unexplainable in the woods of North America.

A documentary propaganda film produced by the U.S. Army Signal Corps about the Aleutian Islands Campaign during World War II. The film opens with a map showing the strategic importance of the island, and the thrust of the 1942 Japanese offensive into Midway and Dutch Harbor. Nominated for the Academy Award for Best Documentary Feature.

This documentary captures the beauty of Maine's Acadia National Park, as well as detailing the history of the location which happens to be the first area east of the Mississippi River to be declared a National Park.

Alaska – 90,000 square miles of wilderness. Could its uninhabited frontier be hiding monsters and mysteries?

A 94-year-old Glacier National Park ranger confronts the decline of the park he calls home as he reflects on his life and the legacy he will leave behind.

The story of an Eskimo father and son who train and groom a sled dog team. When the father is lost on an ice floe, the son takes the unproven team on the search, and succeeds in finding his father.

Filmed over 23 years, Rise of the Warrior Apes tells the epic story of an extraordinary troop of chimpanzees in Ngogo, Uganda – featuring four mighty warriors who rule through moral ambiguity, questionable politics, strategic alliances and destroyed trust.

First Descent is a 2005 documentary film about snowboarding and its beginning in the 1980s. The snowboarders featured in this movie (Shawn Farmer, Nick Perata, Terje Haakonsen, Hannah Teter and Shaun White with guest appearances from Travis Rice) represent three generations of snowboarders and the progress this young sport has made over the past two decades. Most of the movie was shot in Alaska.

Newly into addiction recovery, an urgent threat emerges to spur filmmaker, Mark Titus back to the Alaskan wilderness - where the people of Bristol Bay and the world's last intact wild salmon runs face devastation if a massive copper mine is constructed.

Documentary about four friends on a 3,000 mile journey across the American West on horseback.

70 years after the last wolves roamed the national park, a total of 41 wolves were reintroduced between 1995 and 1997. A globally unique experiment that had many supporters, but also resolute opponents, then as now.

It’s Christmas in Alaska, but a sparsely populated state means a scarce amount of priests. From Christmas eve to Christmas day, two Dominicans traverse icy roads and harsh winds to celebrate Christmas mass for 3 remote communities in the last frontier.

Park Rangers work to protect and manage black bears and other animals in Great Smoky Mountain National Park as they prepare for the coming of winter.

In Missing 411: The UFO Connection, David Paulides continues the story of people who vanish in the wild without a trace. In his third documentary, David reveals the first evidence documenting a link between UFOs and missing people.

This documentary focuses on the Green Gabon program in the Congo Basin and explores rainforest conservation efforts as a way to stem climate change.

Dubbed ‘The Mountain God’, the Citadel is a stunning 3000m peak in one of the remaining untouched corners of the Great Alaskan Range: The Neacola Mountains. Due to their typically poor conditions and remote location are largely unexplored. Matt Helliker and Jon Bracey are one the UK's most formidable partnerships in alpine climbing with many world class ascents to their names from the UK to the Alps and the greater ranges. Their objective is to make the first ascent of the extraordinary 1200m long north-west ridge.

Narrated by Academy Award winner Robert Redford, National Parks Adventure takes audiences on the ultimate off-trail adventure into the nation’s awe-inspiring great outdoors and untamed wilderness. Immersive IMAX 3D cinematography takes viewers soaring over red rock canyons, hurtling up craggy mountain peaks and into other-worldly realms found within America’s most legendary outdoor playgrounds, including Yellowstone, Glacier National Park, Yosemite, and Arches. Celebrate the 100-year anniversary of the national parks with world-class mountaineer Conrad Anker, adventure photographer Max Lowe and artist Rachel Pohl as they hike, climb and explore their way across America’s majestic parks in an action-packed expedition that will inspire the adventurer in us all.

In 1975, six loggers in Arizona witnessed their crewmate's abduction by UFO. The Travis Walton story became an international sensation and ripped apart a small town. Four decades later, shocking new evidence reveals the true story behind Fire in the Sky.