The largest desert in the world is the Antarctic Desert. Often surprising to some, deserts are defined not only by their heat but by their low precipitation levels. The Antarctic Desert covers about 14 million square kilometers (5.4 million square miles) and is classified as a cold desert due to its icy conditions and harsh climate. Its vast expanses of ice are home to unique ecosystems and wildlife, such as penguins and seals, but few plants and animals can survive the extreme environment. Understanding this unique desert is crucial for studying climate patterns and global environmental changes.