Serengeti darf nicht sterben

Born of the cold war, and eclipsed by success in rocketry, the XB-70 Valkyrie was conceived as a Mach 3 high-altitude bomber and became a valuable high-speed research aircraft. Although only two were produced, and one was destroyed in an accident, the Valkyrie built an impressive databank of high-speed flight invaluable to aviation development. This DVD, with nearly 4 hours of rare footage of the XB-70, newly transferred on modern telecines, brings you the flight test program of the XB-70 as never before. Contains rare progress reports, footage from rollout, extensive footage of test flights, and footage from the A/V-2 accident. All footage is color. Some footage is silent.

Africa the Serengeti takes you on an extraordinary journey to view a spectacle few humans have ever witnessed: The Great Migration. Journey with more than two million wildebeests, zebras and antelopes as in their annual 500 mile trek across the Serengeti plains.

Officially, the Wright Brothers flew first in 1903. But the Australian aviation expert John Brown argues that German born Gustave Whitehead flew in Connecticut in 1901. To display the Wright flyer, the Smithsonian Museum agreed that it will never claim that anyone flew before the Wrights. History may not be as certain as we thought.

Imagine walking some of the largest land animals in existence across one of the most densely populated regions on earth. Intelligent, majestic and awe-inspiring, Elephants have a long and fascinating history with man. On this epic journey we experience the modern day relationship between man and beast.

Celebrates 30 years of televised specials by The National Geographic Society.

A hilarious countdown of the black sheep of aviation, aircraft that have embarrassed their builders, enraged the owners and terrified their pilots. These are stories of aircraft that should have never been built, including highly imaginative concepts to “fly” tanks and jeeps directly onto the battlefield, a real flying saucer and starkly bizarre efforts to design and build a submarine that flies. We come to understand why these ideas were doomed from the start…

Michael Moore's provocative documentary explores the two most important questions of the Trump Era: How did we get here, and how do we get out.

Set against the backdrop of one of Africa's most stunning locations – the Samburu National Reserve in northern Kenya – this compelling series follows the remarkable stories of wild elephants. From the first faltering steps of Breeze, a new born, to the experiences of elderly matriarch Harmattan, this series explores behaviour and relationships revealing elephants to be caring and compassionate beings.

From both local and global perspectives, this documentary examines the harsh realities behind the mounting water crisis. Learn how politics, pollution and human rights are intertwined in this important issue that affects every being on Earth. With water drying up around the world and the future of human lives at stake, the film urges a call to arms before more of our most precious natural resource evaporates.

Any unlucky carcass is dispatched in a matter of minutes by a feeding frenzy that attracts jackals and hyenas along with vultures. Scavenging insects swarm over the remaining bones and horns. While this film focuses primarily on the griffin vulture (“nature’s undertaker”), it considers the role of all scavengers in this harsh ecosystem. Generally despised as harbingers of death, they actually help maintain the health of the savannah by disposing of waste and returning nutrients to the soil.