The only continent without a desert is Antarctica. While it is known for its extreme cold and ice sheets, Antarctica lacks the arid conditions typical of deserts. A desert is typically defined as a region that receives less than 250 millimeters (9.8 inches) of precipitation annually. In contrast, Antarctica is classified as a polar desert due to very low humidity and minimal precipitation. Despite its vast ice coverage, the continent's inhospitable climate means it has no vegetation or permanent human settlements. Its unique environment supports specialized wildlife and research efforts focused on climate change and ecosystems.