High up on the Greenland ice sheet, Arctic scientist Konnie Steffen and his team drop a waterproof camera down a glacier mill. They are trying to see if the speed at which the ice is moving here is linked to climate change.

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Earth: The Power of the Planet (2007)
Examining the great forces that shape the Earth - volcanoes, the ocean, the atmosphere and ice - the programme explores their central roles in our planet's story. How do these forces affect the Earth's landscape, its climate, and its history? CGI gives the audience a ringside seat at these great events, while the final episode brings together all the themes of the series and argues that Earth is an exceptionally rare kind of planet - giving us a special responsibility to look after our unique world.

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