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According to international law, each of the countries bordering the Arctic hold sovereignty over a zone measuring 200 nautical miles (370 kilometres).
Sovereignty over the passage is one of the Arctic's many unresolved issues: Canada claims it, but the United States says the waters are international.
This raises unique challenges for Arctic wildlife and indigenous people who depend on Arctic ecosystems to survive.
While a polar bear is sleeping on an ice berg with its paws clutched around, it is like a toddler holding their teddy bear. That is truly cute!
Y is tangential to the ground at the device's current location and points toward the geomagnetic North Pole.
Global warming has posed a serious threat to the survival of animals such as polar bears.
Meanwhile, in the Russian Arctic, geoengineering plans include the planting of millions of birch trees.
Way up north in the Canadian Arctic, seabirds are picking up dangerous chemical in the ocean and delivering them to ponds near where the birds live.
Because sloth bears are smaller than brown and polar bears and are under greater threat from dangerous animals, they may have adopted the extra precaution of carrying their cubs.
Like brown bears and polar bears, sloth bears may have evolved in an environment with few trees.
Most Canadians live huddled up against the southern border with the United States; they have more in common with Americans than with their Arctic compatriots.
With thick layers of fat and fur, the bears are well prepared for cold climes.
Critics from Anchorage and around the nation have urged the zoo to send Maggie to an elephant sanctuary in a warmer climate and away from the near-Arctic zoo.
He has argued that tapping ANWR's oil would help ease California's electricity crisis and provide a major boost to the country's energy independence.
Sea turtles, polar bears and giant pandas are just some of the thousands of animals in this world that are at risk of extinction.
Once is established, shrubland thrives, particularly in the Arctic, because Arctic shrubs are good at taking advantage of increased nutrients in the soil, better than other Arctic plants.
The scientific labours in the chill winds and high seas of the Arctic summer seem wrapped in an unusual sense of urgency this year.
The walrus, with its tusks and whiskers, is instantly recognizable and can outweigh the polar bear by more than a thousand pounds.
Living creatures are not numerous here: some bears, deers and many Arctic ground squirrels (in common parlance they are called "evrazhkas").
And this revealed the woolly mammoth's blood adapted to cope with the freezing conditions.
They also found evidence that wind gusts in the northern polar region are strong enough to move grains of sand.
While a Polar bear sleeping on an ice berg with its PAWS clutched around it like a toddler holding their teddy bear is truly cute.
That dream wizard waved his hands, I saw the scenery of the Antarctic and arctic.
"A lot of large carnivores tend to be cannibals -- lions, hyenas, alligators, polar bears, " researcher Nicholas Longrich told Discovery News.
From the pictures, we can see that polar bear is cute and look kind. Don't you know that polar bears are the largest carnivores on land;