The Sahara is, perhaps, one of the most mysterious places on the planet. Not only is it the world's largest hot desert, but ...

A giant patch of black, fossilized lava that was spewed across the Sahara desert over millions ... This model also selected pixels where patches of sand that have settled in between gaps in ...

In a helicopter high above the Swiss Alps, we see climate change in action ... A lack of snow over the winter, Sahara dust events, a warm spring and exceptionally hot summer have all combined ...