Discover the top driest places on Earth, why they experience such little rainfall and what can survive in each region's harsh conditions.. Deserts are found around the world, including next to oceans. But why are these regions dry?
Hot and dry desert The four major North American deserts of this type are the Chihuahuan, Sonoran, Mojave and Great Basin. Others outside the U.S. include the Southern Asian realm, Neotropical (South and Central America), Ethiopian (Africa) and Australian.. The Sahara Desert is the world's largest hot desert and one of the driest deserts of the world. It covers an area of about 9.2 million square kilometres (3.6 million square miles) in North Africa. It stretches across several countries, including Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, and Sudan. The Sahara Desert is known for its extremely dry and hot.