Earth: The Power of the Planet - Ice

Documentary series in which Dr Iain Stewart reveals the natural forces that have shaped the earth's development. Ice isn't just something to put in a gin and tonic - it has carved out landscapes, unleashed catstrophes and shaped human evolution. Now it could cause the destruction of our civilisation. Iain visits the Jacobshavn glacier in Greenland which has retreated 10km in the last few years because of global warming.