An expert’s guide to running over 100 miles through endless sand and oppressive heat at the Oman Desert Marathon five-stay stage race.

The parched desert and hillsides made an inviting canvas: By simply removing a layer of dark stones cluttering the ground, exposing the lighter sand beneath, the Nasca created markings that have ...

Chinguetti, Mauritania is home to some of West Africa’s oldest Quranic texts and manuscripts. It could soon be swallowed by the sand.

Every year, the world consumes around 50 billion tonnes of sand, gravel and crushed stone. The astonishing ... faster than they can be replenished. Desert sand often has grains too round for ...