Their origins and dynamics are important in understanding how deserts have evolved in response to climate change and changes in sand supply and mobility, and how they will continue to evolve in the ...

But there was one I hadn’t realized I’d need to survive the Sahara: reading sand dunes ... in the Libyan Desert in the 1920s and ’30s. Bagnold described barchans as life-forms—they ...

The age of one of Earth's largest and most complex types of sand dune has been ... see how quickly this enormous dune formed, and that it is moving across the desert at about 50cm a year," he ...

Coastal dunes are a ridge, or a series of ridges, that form at the rear ... are capable of colonising sand dunes (Hesp 1991). Nevertheless, in contrast to most desert dunes, vegetation usually ...

We flew from Beijing to Lanzhou and then drove to a town near the edge of the desert to meet our camel team. We camped in the sand the last night before setting off into the dunes. I didn’t ...

This 2012 satellite photo shows a series of giant windblown ridges, known as yardangs, and a group of towering sand dunes at the heart of Iran's Lut Desert. When you purchase through links on our ...