What does this mean for life beyond Earth?
The Arctic National Wildlife Refuge is on the verge of being opened to oil drilling.
Both NATO and Russia have been very active and increasingly aggressive over the past year or so.
The Sibir weighs 33,500 tons, is more than 576 feet long and is fueled by two nuclear reactors, giving it the power to plow through icy Arctic terrain.
Remains of a baby and an adult dating back 800 years were found in burial cocoons at the archaeological site.
Sea ice is unexpectedly in motion, making the expedition far too dangerous.
"The proposal remains in place," Finland's ambassador to Russia has said.
Moscow has a message for the world: hands off the North Pole.
Over the past year oil companies have discovered volumes on Alaska's North Slope totaling as much as five billion barrels or more of recoverable oil.
Russian President Vladimir Putin said he would meet with President Donald Trump if Finland invited both world leaders to an Arctic Council summit in May.
The Russian leader visited Franz Josef Land, before arriving at an Arctic forum in Arkhangelsk.
Moscow is trying to tap the region's massive oil and natural gas reserves and encourage commercial shipping through an Arctic shortcut between European and Asian ports.
Traditional tribes in the Arctic Circle come together to fight climate change and industrialization and preserve a culture.
The effects of climate change are raising temperatures in the Arctic faster than anywhere else, posing a threat to structures as foundations disintegrate.
The delegation is trapped inside an Arctic island base, surrounded by bears.
Russia launched as many icebreakers in June as the U.S. Coast Guard has launched in the past 40 years.
Unusually high temperatures in far north Russia caused an outbreak of anthrax, leaving 72 nomadic herders and 41 children hospitalized.