5/5. Geography series with Dr Iain Stewart. Life on Earth prospers because it enjoys the right amount of heat from the sun, and the atmosphere prevents meteorite bombardment. Also in HD. [S,AD]
3/5. Documentary series in which Dr Iain Stewart tells the story of the earth's development. Ice isn't just something to put in a gin and tonic - it has carved out landscapes. Also in HD. [S,AD]