By 2050, sea levels along the United States coast are expected to rise by 0.25 to 0.30 meters, increasing flooding in ...

Aa Aa Aa For large-scale coastal dune development there needs to be a suitable wind regime, large reserves of sand and suitable nearshore, beach and back beach morphology (Pye 1983, Iversen ...

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 ...