This astounding documentary delves into the mysteries of the Tunguska event – one of the largest cosmic disasters in the history of civilisation. At 7.15 am, on 30th June 1908, a giant fireball, as bright the sun, exploded in the sky over Tunguska in central Siberia. Its force was equivalent to twenty million tonnes of TNT, and a thousand times greater than that of the atomic bomb dropped on Hiroshima in 1945. An estimated sixty million trees were felled over an area of over two thousand square kilometres - an area over half the size of Rhode Island. If the explosion had occurred over London or Paris, hundreds of thousands of people would have been killed.
ITV Naturalist Nigel Marven stars in this drama-documentary in which he explores his own back garden...
Lake Tanganyika is an 'Ocean' in Africa. Millions of years ago it was colonized by a little fish cal...
In Africa there is a fable that explains the creation of the tides. When a hyaena challenged a mudsk...
A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwi...
Provides, through onsite study and observations of a young biologist, an introduction to the life cy...
Werner Herzog's documentary film about the "Grizzly Man" Timothy Treadwell and what the thirteen sum...
Theory of Light is a documentary centred on the climate emergency through a climate justice lens. It...
We have volunteered for the Earth Conservation Corps to restore the Anacostia river and the Washingt...
National Geographic filmmakers, Dereck and Beverly Joubert, explore how some animals are thrust toge...
After one of the hottest years on record, Sir David Attenborough looks at the science of climate cha...
An in depth look at the undersea life of dolphins
Go to the Big Island and hover above erupting craters at Hawaii Volcanoes National Park, watch flowi...
A compilation episode of the wildlife documentary series presented by David Attenborough, uncovering...
In a time of hardship, Hobart resident Peter Walsh turns to the secretive platypus for solace, only ...
A look at the state of the global environment including visionary and practical solutions for restor...