New acquisitions allowed species to be more competitive. When it came to looking for food or avoiding being eaten and the penalty for falling behind was death.
If a living creature wants to establish itself in any of the worlds on the surface it will have to learn to overcome the particular limitations presented by temperature, humidity, altitude and other similar factors.
National Geographic photographer Chris Rainier and filmmaker Ethan Boehm team up to bring Rainier's photographs and Boehm's cinematography of the sacred temples and Buddhist monks of Angkor Wat poetically to film. With music by Anushka Shankar.
National Geographic photographer Chris Rainier and filmmaker Ethan Boehm team up to bring Rainier's photographs of tatoos and scarring rituals around the world poetically to film. With music by Anushka Shankar.
Filmmaker Michael Brown and Chilean conservationist Pablo Sandor lead a magnificent, wild adventure through a "vertical forest" into an unknown spectacular Yosemite-like granite canyon -- an expedition recognized by the United Nations for its role in protecting the pristine Corcovado National Park in Southern Chile.
A celebration of the paragliding lifestyle around the world, as two top acro-pilots travel to spectacular aerial locations across the globe - in search of the perfect thermal.
Reinhold Messner, the world's greatest mountain climber, looks back over his career with surprising candor and self- revelation, with rare film footage of his astonishing climbs of the world's highest mountains.
Tells the heroic story of river, bay and soundkeepers around the U.S. - part environmental investigators, scientists, and litigators who take pollutors to court under the federal Clean Water Act. Featuring Robert F. Kennedy, Jr.
Narrated by Edward Norton, this stunningly beautiful film documents an important environmental whitewater expedition down three epic rivers in the Chinese Himalaya, the upper Yangtze, Mekong and Salween.
The stirring and dramatic story of the 30-year fight to save the Hudson River from pollution by major corporations and major cities, against the backdrop of an apathetic state and federal government. Featuring Robert F. Kennedy, Jr.
