In front of the United States Geological Survey (USGS) national headquarters building in Reston, Va., two genetically identical lilac bushes are rooted in the earth. To casual observers, they are fragrant adornments to the landscaped property. But to ecologist Jake Weltzin and geographer John Jones—USGS scientists who study plant and animal life-cycle events—they are “Li” and “Lac,” two small but important pieces of a developing climate change indicator system.
PostedJul 25, 2012
For several days this month, Greenland's surface ice cover melted over a larger area than at any time in more than 30 years of satellite observations.
PostedMay 1, 2012
Featured on USDA , a member of the U.S. Global Change Research Program The Forest Service recently unveiled a product that helps natural resource managers rapidly detect, identify and respond to unexpected changes in the nation's forests by using web-based tools. The satellite-based monitoring and assessment tool aptly called ForWarn , recognizes
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.