This film investigates the parallel stories of collapsing Pacific salmon populations and how biologists and engineers have become instruments in audacious experiments to replicate every stage of the fish’s life cycle. Each of our desperate efforts to save salmon has involved replacing their natural cycle of reproduction and death with a radically manipulated life history. Our once great runs of salmon are now conceived in laboratories, raised in tanks, driven in trucks, and farmed in pens. Here we go beyond the ongoing debate over how to save an endangered species. In its exposure of a wildly creative, hopelessly complex, and stunningly expensive approach to managing salmon, the film reveals one of the most ambitious plans ever conceived for taking the reins of the planet. Watch the full episode. Buy the DVD. This film premiered May 1, 2011. (Video limited to US & Territories).

Follow individual koalas from a small social group on an Australian island to learn just how a koala manages to survive and thrive on a diet poisonous to almost all other herbivorous mammals. From the miracle of marsupial birth to tender moments of discovery between mother and newborn joey, encounters with threatening forest creatures, battles between rival males and the complex chorus of bellows and grunts that have become so important to science — join leading scientists as they unravel just what a forest needs to support a healthy population of koalas by listening to these marsupials themselves and cracking the koala code. Buy the DVD. This episode premiered May 16, 2012. (Video limited to US & Territories).

Central Idaho’s Frank Church – River of No Return Wilderness is the largest contiguous wilderness area in the lower 48 States. Endless rugged mountains, wild rivers, forests and deep canyons define this land — home to numerous species of wildlife, including wolves, who have just returned after 50 years of near absence. A young couple, Isaac and Bjornen Babcock, chose this wilderness for their year-long honeymoon. But what begins as a romantic adventure becomes something much greater for the couple — and a tale of hope and celebration for every life trying to make it in the unforgiving heart of the wilderness. Buy the Blu-Ray or DVD. This film premiered April 18, 2012. (Video limited to U.S. & Territories.)

Broken Tail: A Tiger’s Last Journey won top honor at the 2011 Jackon Hole Wildlife Film Festival, known as the Oscars of nature films! Broken Tail won Best of Festival, Best Script, and Best Human/Wildlife Interactions at the 2012 International Wildlife Film Festival!

The tiger known as Broken Tail was born in Ranthambhore National Park in northern India, a vast, natural reserve for a wide variety of Indian wildlife, but especially famous for its Bengal tigers. Historically revered in Indian tradition, tigers in the area were once protected by maharajahs, and then by government sanctuaries and conservation projects. But poachers have proven to be nearly unstoppable over the years, and tigers have struggled to survive, even with the protection of the park. At one point, there were as few as 26 tigers left in the reserve, and today, the fate of each and every tiger is important to the species as a whole. Conservation efforts have been intensified in the face of the crisis, and the struggle continues. Broken Tail: A Tiger’s Last Journey is the story of the life and death of a tiger destined for greatness, who may still lead the way to a better future for those of his kind. Buy the DVD. This film premiered February 20, 2011.

The answers to the age-old question, “What do women want?” just might be found in the animal kingdom. Scientists use unorthodox techniques and the latest technology to probe the mysteries of attraction. What makes a male gelada a good catch? What can a “fembot” tell us about the sage grouse’s mating behavior? Discover how females are shaping the future of their species by choosing the best mates. Buy this DVD. This film premiered April 5, 2008. What Males Will Do

Are human beings, in an effort to outwit raccoons, actually making them smarter and unwittingly contributing to their evolutionary success? Are the ever more complex obstacles that our fast-paced urban world throws at them actually pushing the development of raccoon brains? In this film, scientists from around the world share their thoughts and work to explore this scientific theory. Attempting to do something that has never been done before, they closely follow a family of urban raccoons as they navigate the complex world of a big city. Buy the DVD or Blu-Ray. Raccoon Nation premiered February 8, 2012. (Video limited to U.S. & Territories.)

While legend paints the wolverine as a solitary, blood-thirsty killer, there is another, more complex image of the wolverine that is just beginning to emerge. This episode of NATURE takes viewers into the secretive world of the largest and least known member of the weasel family, revealing it to be one of the most efficient and resourceful carnivores on Earth. Buy the DVD. This film premiered November 14, 2010.

Part of the massive Tongass National Forest, Admiralty Island in southeast Alaska supports the largest concentration of bears anywhere in the world. Sustained by a wealth of salmon streams, isolated and protected by their environment, some 1,700 Alaskan brown bears are part of a unique circle of life that has played out here for centuries. Beginning in August, millions of salmon — pink and chum, coho and sockeye — return to the island to spawn, providing a feast for the bears, eagles, orcas, sea lions and even the trees. As long as the salmon continue to arrive, all is well. But this year, the salmon fail to arrive for the first time, and the bears get a bitter taste of what the future may hold.Buy the DVD. This film premiered on January 25, 2012. (Video limited to U.S. & Territories.)