When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains.
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George Monbiot as Narrator
George Monbiot Director
Canada 21 March 2014
These some of the most viewed trailers for movies released in 2014:
23 October 2014
When Lou Bloom, desperate for work, muscles into the world of L.A. crime journalism, he blurs the line between observer and participant to become the star of his own story.
14 November 2014
Based on the real life story of legendary cryptanalyst Alan Turing, the film portrays the nail-biting race against time by Turing and his brilliant team of code-breakers at Britain's top-secret Government Code and Cypher School at Bletchley Park, during the darkest days of World War II.
02 August 2014
Housewife Yoko is paranoid after being attacked by someone.
13 July 2014
When Matthew explores the 'spiral' in his grandmother's garden (a strange structure built by his late grandfather) he discovers an entrance into the magical world of 'the Shadows' where he meets his new Shadow friends, Yorrick and Alice, and begins his great adventure.
15 October 2014
April, 1945. As the Allies make their final push in the European Theater, a battle-hardened army sergeant commands a Sherman tank with a five-man crew on a deadly mission behind enemy lines.
22 November 2014
Skipper, Kowalski, Rico and Private join forces with undercover organization The North Wind to stop the villainous Dr.
07 March 2014
A former U.S. Navy Seal seeks life, liberty and the pursuit of happiness living life as a transgender woman.
29 August 2014
It was a concert fit for a king. Filmed live from his final show in Dallas, Texas, George Strait performs some of his most-loved hits and shares the stage with many famous friends.
21 October 2014
After a confrontation, a group of women are taken by a presence.
15 May 2014
The ultimate X-Men ensemble fights a war for the survival of the species across two time periods as they join forces with their younger selves in an epic battle that must change the past – to save our future.
26 February 2014
The Grand Budapest Hotel tells of a legendary concierge at a famous European hotel between the wars and his friendship with a young employee who becomes his trusted protégé.
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