The World Atlas of Deserts and DrylandsA richly illustrated atlas of the world's deserts and drylands, their ecosystems, and their environments. Deserts and drylands account for more than 40 percent of land on our planet. Characterised by a lack of water and extreme temperatures, they are the result of atmospheric stability, large landmass characteristics, rain shadows, and cold ocean currents. They appear harsh and hostile, but deserts and drylands are also exceptionally beautiful