“All deserts are hot and sandy”

Many people picture vast, scorching landscapes covered in endless dunes when they hear the word "desert." This common image, often reinforced by popular culture and media depictions of places like the Sahara, leads to the widespread belief that all deserts are hot and sandy. However, this mental picture only captures a fraction of the world's diverse desert environments.

Scientifically, a desert is defined by its arid conditions, specifically receiving very little precipitation, not necessarily by temperature or sand. In fact, many deserts are cold, rocky, or icy. The most striking examples are the polar regions: Antarctica and the Arctic are the world's largest deserts, experiencing extremely low temperatures and minimal snowfall. Even within more temperate zones, deserts like the Gobi in Asia can see winter temperatures plummet below minus 40 degrees. Furthermore, while sand dunes are iconic, only about 25% of the world's deserts are covered in sand, with the majority featuring gravel, rock, or even ice.

The enduring misconception likely stems from our exposure to the most famous and visually dramatic deserts. The hot, sandy deserts of North Africa and the Middle (Review) East are prominent in films, literature, and news, creating a powerful archetype. This narrow portrayal overshadows the vast majority of deserts that defy this stereotype, making it easy to overlook the true diversity of these fascinating, arid ecosystems.