Greenland (both larger) are generally considered to be continental landmasses rather than islands. Three-quarters of Greenland is covered by the only permanent ice sheet outside Antarctica. With a population of about 56,480 (2013), it is the least densely populated territory in the world. About a third of the population live in Nuuk, the capital and largest city. The Arctic Umiaq Line ferry acts as a lifeline for western Greenland, connecting the various cities and settlements. Greenland has been inhabited off and on for at least the last 4,500 years by Arctic peoples whose forebears migrated there from what is now Canada.
Nuuk year, the sun rises at 10:30 A.M. and sets at 2:20 pm. By contrast, on the longest day and shortest night of the year, 21 June, the sun rises at 3:00 A.M. and does not set until 12:00 am. Nuuk can have mild temperatures on brief occasions year round, with each month having recorded or warmer. The monthly averages range from to , whereas all-time extremes range from to . The climate ( in July) is colder than what is considered the limit for trees ( during the warmest month). There are a few planted trees which do not sustain