Sleeping sands of the Kalahari awaken after more than 10,000 years

In Africa's Kalahari desert, red sand dunes stretch as far as the eye can see--and beyond. Kalahari dunes, asleep for more than 10,000 years, have awakened: They're moving across the landscape. Scientists are tracking the dunes to find out why.

Read more: http://ift.tt/1qgEEc8