Two journalists traverse the Grand Canyon by foot, hoping this 750-mile walk will help them better understand one of America's most revered...

The grasslands of Africa are a banquet spread for feline predators. Explore the hunting and nurturing habits of lions, leopards, and cheetahs of the...

This documentary examines the threatened habitats and the three great predators: the jaguar, the leopard and the cheetah, of the great South American...

A dive inside a wild land where nature hides some of her greatest secrets: The Alps. Steep slopes, wind swept cutting edge rocks. An air desperately...

A group of scientists are thinking outside the box for ways to reverse the effects of global warming. And who better to save the earth than National...

In 2009 a team of British cavers went on an expedition deep within the jungle of central Vietnam. To their amazement they discovered an enormous cave...

See the world's first MRI scan of a great white shark as Ultimate Shark reveals the extreme engineering and predatory abilities of one of nature's...

Peter Gimbel and a team of photographers set out on an expedition to find and film, for the very first time, Carcharodon carcharias—the Great...

Two highly trained operatives grow close from a distance after being sent to guard opposite sides of a mysterious gorge. When an evil below emerges,...

A U.S. Marshal escorts a government witness to trial after he's accused of getting involved with a mob boss, only to discover that the pilot who is...

Sonic, Knuckles, and Tails reunite against a powerful new adversary, Shadow, a mysterious villain with powers unlike anything they have faced before....

After meeting with newly elected U.S. President Thaddeus Ross, Sam finds himself in the middle of an international incident. He must discover the...

During a weekend getaway at a secluded lakeside estate, a group of friends finds themselves entangled in a web of secrets, deception, and advanced...

International action star Jackie Chan is invited to the adoption ceremony of a rare baby panda, but after an international crime syndicate attempts...

When a faithful police dog and his human police officer owner are injured together on the job, a harebrained but life-saving surgery fuses the two of...

Escaping post-war Europe, visionary architect László Toth arrives in America to rebuild his life. On his own in a strange new country,...

A fading celebrity decides to use a black market drug, a cell-replicating substance that temporarily creates a younger, better version of herself.

Two married spies caught in the crosshairs of an international intelligence network will stop at nothing to obtain a critical asset. Joe and Lara are...