Deserts of the World

About this quiz

When most people imagine a desert, they picture endless, scorching sand dunes rippling under a relentless sun, much like the cinematic depictions of the Sahara. However, in geographical terms, a desert is not defined by its temperature or its sand; it is defined entirely by its severe lack of precipitation. A region is technically classified as a desert if it receives less than 10 inches (25 centimeters) of rain or snow per year. This rigid scientific definition means that the largest desert on Earth is not in Africa or the Middle East, but rather the freezing, icy expanse of the Antarctic Polar Desert, which is effectively a frozen wasteland devoid of significant snowfall. Deserts are environments of absolute extremes, forcing plant and animal life to evolve astonishing, highly specialized biological adaptations just to survive. From the deep taproots of the mesquite tree reaching for subterranean aquifers, to the phenomenal water-retention capabilities of the camel, life in these arid zones is a constant, brutal battle against dehydration. Exploring these regions—from the Mars-like terrain of the incredibly dry Atacama Desert in South America, which hasn't seen rain in some areas for centuries, to the vast, rocky expanses of the Gobi in Asia—reveals the sheer resilience of the natural world. This quiz will test your knowledge of these harsh, beautiful, and deeply misunderstood extreme environments across the globe.