A large block of permafrost that has broken off on the coast of Alaska. Photo: Benjamin Jones, USGS Methane escapes from upland Arctic Yedoma permafrost soils in quantities that exceed those in regions further north by far – emissions that have only recently...
Yedoma permafrost with the mighty ice masses and underlying river sediments in the Lena Delta. Photo: Janet Rethemeyer Arctic permafrost plays a significant role in global warming, climate scientists agree. Still under debate, however, is the amount of greenhouse...
