This story appears in the November 2012 issue of National Geographic magazine. I got my first lesson in the physics of sand dunes in 1998 on an expedition into the Sahara. In order to take aerial ...

or a 98-foot high dune moves at 16 feet per year. By comparison, the sand heaps in the lab moved at about 65 feet per hour. “If you are using satellite images to look at these interactions ...

Channel Coastal Observatory and Lloyd Russell, University of Plymouth An aerial view of Crantock dunes taken ... the complex nature of Cornwall's sand dunes and the need to assess each in its ...

The oculus-like structure is surrounded by migrating sand dunes that are capable of traveling ... By comparing their location in this image with satellite images of the same area in late 2003 ...

An aerial view of Crantock dunes taken in September ... "It all demonstrates the complex nature of Cornwall's sand dunes and the need to assess each in its own right." The report, external said ...