Some deserts are among the planet's last remaining areas of total wilderness. Yet more than one billion people, one-sixth of the Earth's population, actually live in desert regions. Deserts cover ...

When you picture a desert you probably think of sand ... of Earth now known as ‘drylands’, meaning that they cover over 40% of our planet’s total land area. Known as ‘desertification ...

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