Earlier this week we brought you stunning images of global urban growth as captured by Landsat, NASA's longest running satellite imagery program. These images capture the dramatic changes to some of America's natural landscapes.
Aug 3, 2012 Wired
Joe Romm reports on a new U.S. Geological Survey (USGS) paper that ties the unprecedented rise in earthquakes of magnitude 3.0 and greater across a broad swath of the country to man-made sources.
Apr 9, 2012 Climate Progress