"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."

"A small plane with two sick U.S. workers arrived safely in Chile late Wednesday after leaving Antarctica in a daring rescue mission from a remote South Pole research station, officials said."

"Extraordinary melting in Greenland's ice sheet last summer was linked to warm air delivered by the wandering jet stream, a phenomenon that scientists have increasingly tied to global warming."

"A Spanish oil company has become the latest to abandon its federal drilling leases in the Arctic’s Chukchi Sea."

"While Arctic ice is melting at a record pace, a team of NASA-led researchers say they can explain why Antarctic sea ice has been edging in the opposite direction. That paradox has puzzled scientists for years and given climate-change deniers fodder to dispute global warming."