The concentration of carbon dioxide in the atmosphere of Barrow, Alaska, reached 400 parts per million (ppm) this spring, according to NOAA measurements, the first time a monthly average measurement for the greenhouse gas attained the 400 ppm mark in a remote location.
PostedMay 2, 2012
Ecosystems & Biodiversity
Data collected from long distance swims by polar bears suggest that they do not stop to rest during their journey.
PostedMar 27, 2012
A new study by USGS scientists and university researchers reveals that a substantial amount of organic carbon on Alaskan glaciers comes from atmospheric deposition of fossil fuel emissions.
PostedFeb 3, 2012
Last week, the Interior Department's US Geological Survey (USGS) released details about a landmark airborne survey of permafrost in the Yukon Flats of Alaska that yielded some of the most detailed, data-rich maps of permafrost ever generated.