The Arctic has a unique ecosystem of plants and animals that are found nowhere else on Earth. The Arctic is also special because it is warming at least twice as fast as the rest of the world and is in extreme danger.
Probably for the same reason that the Tropic of Cancer and the Tropic of Capricorn are drawn on the globe.
They are called the Arctic Circle and the Antarctic Circle.
general astronomy
No, just on the maps.
The Arctic Circle, as of 1 July 2017, runs 66°33′46.7″ north of the Equator. The Arctic Circle is the most northerly of the five major circle (line) of Latitude.
Look at a globe. The Arctic Circle surrounds the North Pole at the top of it, the South Pole is at the bottom. The equator circles the globe halfway between the two. Whichever way you read it, the Arctic Circle is closer to the equator than the South Pole is, and the Arctic Circle is closer to the equator than it is to the South Pole.
the arctic circle is at 66.5oN, while the antarctic circle is at 66.5oS
66½ºN is the Arctic Circle; 66½ºS is the Antarctic Circle.
The Arctic Ocean, the North Pole, the Arctic Circle.
the arctic circle is at 66.5oN, while the antarctic circle is at 66.5oS
The Arctic Circle is around 66.5 degrees north.
Arctic Circle, Tropic of Cancer, Equator, Tropic of Capricorn, Antartica Circle, Prime Meridian
It is called a great circle and the plane that circle makes must pass through the geometric center of the globe. The largest circle that can be drawn round the Earth is the great circle round its middle, the "equator" this is because the spinning of the earth makes it 'fatter' round the middle.