Chris Morgan and Joe Pontecorvo set up camp at a remote spot in the heart of Alaskan wilderness, alongside the largest concentration of grizzlies in the world. From brutal battles among males during mating season to tender moments between a grizzly mom and her cubs, they witness bears at their most raw.
The Columbia River Basin once teemed with young salmon heading toward the ocean and mature salmon returning to their home rivers and streams to spawn. Now, many salmon species of the Pacific Northwest are extinct, and thirteen, including the iconic sockeye salmon, are currently endangered.
In February 2009, the state of Victoria in southeast Australia went up in flames; and raging fires engulfed everything in their path. By the time the fires subsided, 173 people had lost their lives, over one million acres of mountain ash forest had been destroyed, and countless animals had perished. Following "Black Saturday", life demonstrated its remarkable resilience even in the middle of burned and blackened wilderness.
The Australian pelican is built for long-distance travel. With a light skeleton and a wingspan of over eight feet, it can be airborne all day and deep into the night. But what exactly triggers their journey? How do they find their way? NATURE looks for answers to questions researchers are only now beginning to unravel.
The tiger known as Broken Tail was born in Ranthambhore National Park in northern India. When he's found killed by a train in Darra, 100 miles away from home, it only raises questions. How did Broken Tail travel so far away from home? Why did he leave in the first place? Colin Stafford-Johnson looks for answers.
Take a stunning journey to the Himalayas. From Everest to the Tibetan Plateau, from the Gaumukh to the Ganges, this episode introduces us to a complex, interconnected natural world that continues to inspire, challenge and amaze the human race.