The North Pole, the northernmost part of the Earth, is not officially part of any single nation. One country, Russia, has placed a flag on the North Pole.
Geographically, Canada and Greenland are both very close to the North Pole. Despite the fact that temperatures in the North Pole are warmer than those in the South Pole, the North Pole is virtually uninhabitable. This is because it is comprised almost exclusively of drifting ice. In fact, what few research stations scientists have managed to erect on the North Pole in order to study its climate and environment are temporary floating installments that typically can only stay adrift for two or three years.