Episodes

As the world's fastest land animal, cheetahs are the odds-on favorite in almost any footrace. After all, they can accelerate to freeway speeds in just a step or two. But in the dry scrublands of southern Africa, the fast felines are falling behind in the most important contest they've ever entered: the race for survival.

Follow these migrating marine mammals and presents their unique singing and hunting habits.

NATURE explores the intriguing subjects of animal intelligence, emotions, and self-awareness.

We may think of ourselves as the most intelligent beings on the planet, yet it seems there is a great deal we can learn from our fellow creatures. Their understanding of the world pre-dates our own, and carries with it extraordinary abilities to heal, communicate, and transform our lives.

In the extreme conditions of Alaska’s great Iditarod sled dog race, almost no factor is more important than the relationship forged between the mushers and their dogs. Their extraordinary bond can mean more than win or lose – it can mean life or death.

They gallop and trot, whinny and neigh, capturing our imagination -- and our hearts. Indeed, horses are said to have done more to change human history than any other domestic animal, once upon a time carrying explorers to new frontiers and mighty armies to great conquests.

This program doesn't just talk with an ape, it carries on an intimate, decades-long dialogue with her.

NATURE uproots the cunning secrets of how flora reproduce.

Though cats appear aloof to the uninitiated, individual owners tell stories revealing that cats are capable of amazing acts of courage, stamina, resourcefulness, and loyalty.

Jutting into the North Pacific from Siberia, Kamchatka is a rugged peninsula of volcanic craters and steep valleys. While its impenetrability once made Kamchatka the perfect home of a notorious Soviet prison camp, its isolation also has kept it a haven for one of Earth's last giants, the grizzly bear.

Take an inspiring look at the real spirits -- both human and wild -- that thrive in a challenging land where fire literally meets ice.

Uncover the variety of activity, both human and natural, that occurs on the slopes of active volcanoes. See the surprising number of animals that survive and thrive alongside these fiery natural phenomena

Defying all conventional labels, John Denver held a singular place in American music: a songwriter whose immensely popular work was suffused with a deep and abiding kinship with the natural world.

This film tells the sad story of how the buffalo nation was destroyed nearly a century ago by greed and uncontrolled hunting -- and how a few visionaries are working today to rebuild the once-great bison herds.

Woldwide, there are more than 370 species of sharks, which vary greatly in size, shape, preferred habitat, and prey. This film explores their worlds and those of their close cousins, the rays.