"Both the Arctic and Antarctic experienced record lows in sea ice extent in November, with scientists astonished to see Arctic ice actually retreating at a time when the region enters the cold darkness of winter."

"More than a year ago, five Arctic nations signed a declaration pledging to keep their fishing fleets out of the international waters in the Arctic Ocean, an area increasingly ripe for exploitation as summer sea ice diminishes — and perhaps increasingly vulnerable with so little known about its ecology."

"The Obama administration is set to block the sale of new oil and gas drilling rights in U.S. Arctic waters under a five-year blueprint, handing a victory to environmentalists who said the activity threatened whales, walruses and other wildlife in the region."

"Antarctica's ice has been melting, most likely because of a warming climate. Now, newly published research shows the rate of melting appears to be accelerating."

"Science ministers from 25 nations joined Alaska Natives from the Alaska Arctic for a first-of-its-kind White House meeting Wednesday to work on international cooperation for Arctic research."

"For the 1,000 passengers aboard the Crystal Serenity cruise ship, climate change has brought a luxurious opportunity: to sail into the history books on the largest passenger vessel to traverse the once unnavigable Northwest Passage."

"Many species of shorebirds that migrate to the Arctic each year to breed their young will lose substantial amounts of their summer habitat to climate change, and the biggest losses in the coming decades will be in Alaska and neighboring parts of Russia, new research concludes."

"The summer sea ice cover over the Arctic raced towards oblivion in June, crashing through previous records to reach a new all-time low."

"The Obama administration on Thursday finalized rules that will require companies to have strict safety and environmental protection plans in place before they drill for oil or natural gas in the Arctic Ocean."

"A new study says the population of Adelie penguins in the Antarctic could drop dramatically in population by 2099 due to climate change. Megan Cimino, who headed the study, explains why."