Dune. Graphics and time-lapse imagery are used to capture the formation of dunes and the profound impact they have had on animal and plant communities as, over the past 10,000 years, the ridges of sand have made their way from the windswept shores of the Atlantic across Africa's Namib Desert. Narrated by Brian Cox.
Producers Patrick Morris and Jeremy Bristow ; Series editor Michael Gunton (S) www.bbc.co.uk/nature