The desert, known for its Joshua trees, is named after the Mojave Native American tribe.Its actual area is constantly in flux as the sands shift, but it's around 3.3 million square miles. The desert covers most of northern Africa.Once the site of prehistoric Lake Lahontan, the desert is now comprised of lava beds and alkali flats.The Thar Desert contains sand dunes reaching heights of 500 feet. The sands date back 1.8 million years.The Chihuahuan Desert receives more rain and has colder winters than other North American deserts.Famous for its red sand dunes, the desert spans 1,200 miles along Africa's Atlantic coast.A desert is a place that receives fewer than 10 inches of rain each year, so the Antarctic Desert technically qualifies. It only receives around two inches of precipitation — mostly snow — each year, according to LiveScience.Gobi means waterless place in Mongolian.Notable spots include Avdat, a Nabatean city dating back to the 4th century and a UNESCO World Heritage site, and copper mining shafts used by ancient Egyptians in Timna Park.The desert is known for its knarled bristlecone pines, the oldest trees in the world.Within its 900,000 square miles lies Rub'al-Khali, one of the world's largest continuous bodies of sand.Some species, like the saguaro cactus, can only be found in the Sonoran. The desert covers 120,000 square miles in Arizona, southeastern California, and part of Mexico.Some parts of the desert have never recorded any rainfall. Despite the harsh conditions, it still hosts around 550 species of plants.The desert is located in Botswana and Namibia. Zebras, elephants, giraffes, lions, leopards, and cheetahs call it home.Read more:The most beautiful places in the USThe most beautiful mountain ranges in the USA photographer gained exclusive access to the world's most beautiful garden even though it's closed18 stunning photos of flower fields in bloom around the world