The SAHARA is an arid expanse in Africa, stretching across the continent from the Atlantic Ocean to the Red Sea. It is the world's largest hot desert, covering an area of over 3.5 million square miles. The SAHARA is home to a variety of wildlife, including gazelles, hyenas, and jackals, as well as a number of human populations. The desert is known for its extreme temperatures, with daytime highs reaching up to 122°F and nighttime lows dropping to below freezing.