The Earth's climate is in a constant state of change based on its position relative to the sun. This relationship means that ...

Africa is often synonymous with its drylands that cover two-thirds of the continent. Relief is brought through rainfall ...

Painted lady butterflies are world travelers. The ones we encounter in Europe fly from Africa to Sweden, ultimately returning to areas north and south of the Sahara. But what determines whether some ...

British writer and explorer Wilfred Thesiger described the wastelands of Saudi Arabia as “a desert within a desert, so ...