After an unusually intense heatwave, downpour or drought, Noah Diffenbaugh and his research group inevitably receive phone calls and emails asking whether human-caused climate change played a role.
This Sentinel-1 radar composite image takes us to the northeastern tip of Ellesmere Island (lower-left), where the Nares Strait opens up into the Lincoln Sea in the Canadian Arctic.
In 2011, researchers observed something that should be impossible—a massive bloom of phytoplankton growing under Arctic sea ice in conditions that should have been far too dark for anything requiring photosynthesis to survive. ...
The frigid top of the Earth just set yet another record for low levels of sea ice in what scientists say is a signal of an overheating world.
Extreme weather and climate conditions, including Arctic "heatwaves", are continuing this year, after 2016 topped the global temperature charts and saw shrinking sea ice and surging sea levels.
In March, the Arctic sea ice pack is supposed to reach its greatest extent—but this year it's far below average, off by an area about the size of Texas and New Mexico combined.
China's severe winter air pollution problems may be worsened by changes in atmospheric circulation prompted by Arctic sea ice loss and increased Eurasian snowfall - both caused by global climate change.
Polar cod fulfil a key role in the Arctic food web, as they are a major source of food for seals, whales and seabirds alike. But the polar cod themselves might soon be the hungry ones. Under the ice of the central Arctic, ...