The fire season is 105 days longer than it was in the 1970s, according to an analysis by Climate Central.
Changing winds at one end of the continent, themselves linked to warming, could be setting off changes that push warm water below the ice at the other end, thousands of miles away.
Across the Arctic Ocean temperatures were nearly 5 degrees Fahrenheit above average, and in the Chukchi and Barents seas temperatures soared 9°F above average.
Repeated bouts of warm weather could send Arctic sea ice to a record low winter peak, as Antarctic sea ice is at an all-time low.
NASA and NOAA officially declare 2016 the hottest year on record and a marker of global warming.
A key Atlantic Ocean current could be more likely to slow drastically because of global warming.
Climate change changed the odds or intensity of many of 2015's extreme weather events, an annual attribution report finds.
Rising temperatures could make extreme rainfalls 400 percent more likely across the U.S. and drop up to 70 percent more rain.
Winter will bring continued dry conditions in California, the Southeast and parts of the Northeast.
Warming ocean waters and changes in sea ice coverage could cause dramatic declines in Antarctic krill, a linchpin of the region's food chain.