Researchers have discovered that thawing permafrost in the Northern Hemisphere stores twice as much mercury as the rest of the planet’s soils, atmosphere, and oceans. The finding has significant implications for human health and ecosystems worldwide. In a new study, scientists measured mercury concentrations in cores of frozen ground—or permafrost—from Alaska and used the data to […]
The annual migration of some beluga whales in Alaska is altered by sea ice changes in the Arctic, while other belugas do not appear to be affected. A new study led by the University of Washington finds that as Arctic sea ice takes longer to freeze up each fall due to climate change, one […]
SAN FRANCISCO — On rare winter mornings here, a skim of ice forms on sidewalk puddles. But water’s solid form is mostly an abstraction in this land of blooming flowers and the hummingbirds that visit them. Except for the week of the fall meeting of the American Geophysical Union. Dozens of the 22,000 scientists gathering […]
A new mapping project has identified regions worldwide that are most susceptible to dramatic permafrost thaw formations, known as thermokarst, and the resulting release of greenhouse gases. University of Alaska Fairbanks researchers David McGuire and Vladimir Romanovsky were part of the project, which was led by University of Alberta researcher David Olefeldt. They found […]