Ice cover on the Great Lakes has been decreasing since the 1970s, affecting everything from fishing to shipping.
Hay fever might leave you wanting to live north of that Westeros Wall, but the farther north you live in the contiguous United States, the worse your allergies may get in a warming climate.
About a third of the carbon dioxide released by fossil fuel burning winds up in the global ocean. Repeat cruises help scientists understand what happens to that carbon below the water surface.
A saildrone observed the growth and decay of a bloom of ocean plants in the Alaskan Arctic in late summer 2017. Such blooms affect the rate of regional ocean acidification, which occurs as surface waters absorb human-produced carbon dioxide.
A dry winter set the stage for widespread and severe drought across the Southwest and Southern Plains.
A lack of persistent sea ice in waters around the Bering Strait this winter disrupted travel, damaged roads and other infrastructure, and prevented traditional hunting and fishing in several coastal communities in western Alaska.
A recent analysis of 276 National Parks found that about three-quarters of them are experiencing earlier springs. The changes in when leaves and flowers emerge affect not just pollinators, but also park staff, who have to budget and prepare for earlier visitors.
Smog descends on India and Pakistan in mid-November 2017
November 15, 2017
Wildfire still burning in Greenland tundra in mid-August 2017
August 18, 2017