It snowed on December 19 in the Sahara Desert, and NASA's Landsat 7 satellite was there (or rather, hundreds of miles overhead) to see it. The photo comes from Landsat 7's Enhanced Thematic Mapper ...

A new study recently published in Hydrology and Earth System Sciences, provides new insights into the meteorological ...

With this amount of sand coverage, there’s still plenty of opportunity for the formation of vast dune seas, known as ergs.