Greenland is the world's largest island (excluding continents) and the largest in the Atlantic Ocean. An autonomous territory within the Kingdom of Denmark, it lies between the Arctic and Atlantic Oceans, northeast of Canada and northwest of Iceland. With a total area of 2,166,086 km² (836,330 sq mi), it ranks as the 12th largest country by area if independent. Despite its vast size, the population is only ~56,000, concentrated along the ice-free coastal fringes—mostly in the southwest. The interior is covered by the Greenland Ice Sheet, up to 3 km thick, containing ~7% of Earth's freshwater. Greenland's strategic location and resource potential (rare earths, hydrocarbons, hydropower) attract global interest. Its self-governance, established in 2009, controls most domestic affairs while Denmark handles defense and foreign policy. Climate change is rapidly transforming Greenland: ice loss accelerates, opening new shipping routes and exposing mineral wealth, but threatening traditional Inuit livelihoods and global sea levels. Greenland's unique position—geologically North American, politically European, culturally Inuit—makes it a focal point of 21st-century geopolitics and environmental science.