The Arctic's warming trends are 'truly unprecedented'

The higher temperatures are in part due to especially warm air coming from the south during this year's winter, the report says. And that's where things get scary. Shrinking sea ice and glaciers used to be a thing of the summer, but now that trend is carrying over into the winter months, says Jeremy Mathis, director of NOAA's Arctic Research Program. "The pace of change that's happening in the Arctic ... is truly unprecedented," he says.Rapidly shrinking arctic sea ice... In winter.