the world's largest island, lying in the North Atlantic Ocean, noted for its vast tundra and immense glaciers. Although Greenland remains a part of the Kingdom of Denmark, the island's home-rule government is responsible for most domestic affairs. The Greenlandic people are primarily Inuit ( Eskimo). The capital of Greenland is Nuuk (Godthåb).

More than three times the size of the U.S. state of Texas, Greenland extends about 1,660 miles (2,670 km) from north to south and more than 650 miles (1,050 km) from east to west at its widest point. Two-thirds of the island lies within the Arctic Circle, and the island's northern extremity extends to within less than 500 miles (800 km) of the North Pole. Greenland is separated from Canada's Ellesmere Island to the north by only 16 miles (26 km). The nearest European country is Iceland, lying about 200 miles (320 km) across the Denmark Strait to the southeast. Greenland's deeply indented coastline is 24,430 miles (39,330 km) long, a distance roughly equivalent to the Earth's circumference at the Equator.

Greenland's major physical feature is its massive ice sheet, which is second only to Antarctica's in size. The Greenland Ice Sheet has an average thickness of 5,000 feet (1,500 metres), reaches a maximum thickness of about 10,000 feet (3,000 metres), and covers more than 700,000 square miles (1,800,000 square km)—over four-fifths of Greenland's total land area. Layers of snow falling on its barren, windswept surface become compressed into ice layers, which constantly move outward to the peripheral glaciers (glacier); the Jakobshavn Glacier, often moving 100 feet (30 metres) a day, is among the world's fastest glaciers. The remaining ice-free land area occupies the country's coastal areas and consists largely of highlands; mountain chains parallel the island's east and west coasts, rising to 12,139 feet (3,700 metres) at Gunnbjørn Mountain in the southeast. These highlands notwithstanding, most parts of the rock floor underlying the Greenland Ice Sheet are in fact at, or slightly beneath, current sea levels.

Long, deep fjords reach far into both the east and west coasts of Greenland in complex systems, offering magnificent, if desolate, scenery. Along many parts of the coast, the ice sheet fronts directly on the sea, with large chunks breaking off the glaciers and sliding into the water as icebergs (iceberg).

The climate of Greenland is Arctic, modified only by the slight influence of the Gulf Stream in the southwest. Rapid weather changes, from sunshine to impenetrable blizzards, are common and result from the eastward progression of low-pressure air masses over a permanent layer of cold air above the island's icy interior. Average winter (January) temperatures range from the low 20s F (about −7 °C) in the south to approximately −30 °F (about −34 °C) in the north. Summer temperatures along the southwestern coast average in the mid-40s F (about 7 °C) during July, while the average in the far north is closer to 40 °F (about 4 °C). Greenland experiences about two months of midnight Sun during the summer. Average annual precipitation decreases from more than 75 inches (1,900 mm) in the south to about 2 inches (50 mm) in the north. Large areas of the island can be classified as Arctic deserts because of their limited precipitation. In the late 20th and early 21st centuries, scientists posited that global warming was profoundly affecting not only Greenland's climate but also its physical geography. A number of scientists noted, for example, that Greenland's vast ice sheet was shrinking at a highly increased rate.

The official languages of the island are Greenlandic (also known as Kalaallisut, an Inuit language belonging to the Eskimo-Aleut language (Eskimo-Aleut languages) family) and Danish (a Scandinavian (Scandinavian languages), or North Germanic, language); English is also spoken. Evangelical Lutheranism, the official religion, is followed by nearly two-thirds of the population; about one-third of Greenlanders follow other forms of Christianity. Traditional beliefs, including shamanism, are still practiced by a small minority.

The population of Greenland is widely dispersed. The large majority of people live in one of the island's 18 municipalities, while the remainder live in villages. Because of emigration levels, Greenland's population growth rate was about zero at the start of the 21st century. Life expectancy is comparable to the world average, with males typically living into their mid-60s and females generally living into their early 70s.

Greenland's economy has long been based on fishing (commercial fishing). Seal hunting, once the mainstay of the economy, declined drastically in the early 20th century and was supplanted by the fishing, canning, and freezing of cod, shrimp, and other marine life. The island's dependence on the fish industry, which is susceptible to problems of overfishing and fluctuating prices, became a growing concern in the late 20th century. Greenland therefore attempted to diversify its economy, and much emphasis was placed on the tourist industry. Since the 1990s, revenue from tourism has grown significantly. The government, which receives substantial financial aid from Denmark, continues to play a leading role in the economy. Nearly half the labour force works in the public sector.

Roadways in Greenland are limited to short stretches within town limits. Although dogsleds and snowmobiles are used on ice-covered coastal areas and inland, shipping and air service are the principal means of transport. Greenland has a sophisticated digital telecommunications network, as well as a military communications network associated with the North Atlantic Treaty Organization (NATO) and the North American radar defense system. The rates of cellular telephone and Internet use rose during the late 20th and early 21st centuries, though usage rates remained lower than those in nearby Canada and in the Nordic countries.

Despite the Western influence exerted by the Danish presence in Greenland and, more recently, by increased access to international mass media, the practice of traditional Inuit ( Eskimo) cultural activities is still of importance. Folk arts such as soapstone carving and drum dancing remain popular, as do kayak building and sailing. The island features a number of museums, including the Greenland National Museum and Archives in Nuuk. Katuaq Cultural Centre, also in Nuuk, hosts concerts, art exhibits, and other cultural events. Numerous sports are played in Greenland: football (soccer) is very popular, as are skiing, badminton, handball, table tennis, tae kwon do, and volleyball. Kalaallit Nunaata Radio (KNR), the island's broadcasting company, offers radio and television programs in Greenlandic and Danish.

In 982 the Norwegian Erik the Red, who had been banished from Iceland for manslaughter, settled on the island today known as Greenland. Returning to Iceland about 985, he described the merits of the newly discovered land, which he called Greenland, and in 986 he organized an expedition to the island that resulted in the development of two main settlements: the East Settlement, near present-day Qaqortoq (Julianehåb), and the West Settlement, near present-day Nuuk (Godthåb). These settlements may have reached a population of 3,000–6,000 on about 280 farms. Christianity arrived in the 11th century by way of Erik's son Leif Eriksson (Leif Eriksson the Lucky), who had just returned from the recently Christianized Norway. A bishop's seat was established in Greenland in 1126.

Beginning sometime in the 13th century, the Norse (Scandinavian) settlers began to interact with the expanding Inuit Thule culture that had appeared in northern Greenland about 1100. But in the 14th century the Norse settlements declined, perhaps as a result of a cooling in Greenland's climate. In the 15th century they ceased to be inhabited.