Tundra plants can eek out an existence in the very short summers of the Canadian High Arctic such as here on Ellesmere Island, Nunavut. (Anne Bjorkman, University of Gothenburg) Rapid climate change ...

The Arctic is rapidly changing from the climate crisis, with no "new normal," scientists warn. Wildfires and permafrost thaw are making the tundra emit more carbon than it absorbs. From beaver ...

Foreboding environmental milestones abounded again this year in the Arctic, where experts say dramatic climate shifts are fundamentally altering the ecosystem and how it operates. One recent turning ...

Arctic tundra, which has stored carbon for thousands of years, has now become a source of carbon dioxide. The new research, led by scientists at the Woodwell Climate Research Center in Falmouth, ...

The news that the frigid Arctic tundra ringing the polar region has switched from being a net absorber, or "sink," of planet-warming greenhouse gases to a net emitter, or "source," indicates the ...

Scientists have reactivated 40,000-year-old microbes from thawing Alaskan permafrost, raising concerns about their potential to release greenhouse gases. The organisms, dormant since the Ice Age, ...

Rapid climate change is upending plant communities in the Arctic, with species flourishing in some areas and declining in others, according to a new study in Nature. The decades-long investigation, ...