Among the mountain gorillas of Rwanda, Titus reigns as king. In the decades that followed his birth in 1974, Titus was orphaned and abandoned, survived poachers, and overcame the deadly challenges of his rivals. Researchers and conservationists recount his triumphant story as they share their memories and archival footage of Titus, from his days as a newborn to his rise to power as a silverback. Buy the DVD. This program premiered April 19, 2008.

Swaziland resident Clifton Koen doesn’t really care for snakes, but his wife, Thea Litschka-Koen, is crazy about them. With her husband’s sometimes reluctant help, she has endeavored to change attitudes about black mambas and other snakes found in the area. In addition to starting the nation’s only reptile park, devoted to educating the public and providing a refuge for the animals, the two have become the region’s go-to experts for safe, humane snake removal from homes, schools, resorts and workplaces. In the course of catching and relocating any number of snakes per day, Thea and Clifton give impromptu lessons about the snakes, covering fact and fiction, and do their best to prevent any unnecessary casualties – human or reptile.

In addition to their other efforts, Thea and Clifton developed a program designed to track black mambas in the wild for the first time and to gain new insights into their behavior. With the help of a snake expert from Johannesburg, they were able to surgically insert radio transmitters in a number of captured black mambas, allowing them to follow the snakes after their release. If their research pays off, they may be able to show that their relocations are working, successfully removing snakes from residential areas for the long term, and thereby bringing some relief to the locals and some respite for the snakes.

Black Mamba premiered October 3, 2010.

Photo by Andrew Yarme © Tigress Productions

The Zambezi is known as the “River of Life” across southern Africa, but surviving by the river near Victoria Falls is not always easy. During the rainy season the Zambezi has a fierceness and a power that is deadly to both animals and humans. At the peak of the rainy season, almost 300,000 gallons of water cascade over the falls every second.

Despite the danger, many birds, reptiles, fish, and mammals call this area home. And a fisherman, known as Mr. White, has lived in a nearby town for 74 years, spending almost every day by the falls. NATURE joins Mr. White as he tells us Zambezi’s story — a story of the changing seasons and many moods of the river.

During the dry season, life gravitates to the river by Victoria Falls. As the sun beats down and the water level lowers, grass-covered islands above the falls are exposed. Families of elephants from the surrounding savannah flock to the Zambezi to make the river crossing. Predator and prey rely on the river for water, and pairs of bee-eaters and pied kingfishers dig nests in the exposed muddy banks. Fish eagles raise their young and teach them to hunt, and hippos crowd the waters.

Life flourishes, for a while. And then, months later, clouds gather in the sky and rising waters force many animals to leave. It is the rainy season, and Victoria Falls becomes magnificent again – her voice rising from a whisper to thunder.

Victoria Falls premieres Sunday, May 17, 2009 at 8pm (check local listings).

The animals are some of the world’s most intriguing and unique populations of lions, yet very little is known about them. Dr. Stander is passionate about studying them and helping them to survive. The lions, and Stander’s efforts to understand their secrets, are featured in NATURE’s The Desert Lions.

On the Web site for The Desert Lions, you’ll learn more about Dr. Flip Stander and the animals he’s dedicated his life to tracking and studying. Find out about the unique family structure of the lions, and why their conservation is so vital. Discover the Namib Desert and how its inhabitants, animal and human, are able to survive. Buy the DVD. This film premiered December 2007.

The Drakensberg Mountains are Southern Africa’s Alps, rising more than 11,000 feet into the sky. But beneath their shimmering beauty lies an incredibly hostile environment for the creatures that manage to live there. Each spring, drenching rains destroy the grasslands at the base of the mountains, and those who would survive must climb up sheer cliffs of volcanic rock, through gauntlets of storms and snow, to reach the carpets of new grass on the plateau. The baboons that make their home halfway up the heights may have the advantage of agility, but eland, the world’s largest antelope, have long, spindly legs and heavy bodies, which make their climb to the top all but unbelievable. All have babies at their sides. And the vultures circle overhead. Buy the DVD. This film premiered February 8, 2009.