The Arctic (click here) continued to shift to a warmer, greener state in 2013. That was the headline from the latest Arctic Report Card, an annual update prepared by scientists from the National Oceanic and Atmospheric Administration (NOAA) and partner organizations such as NASA. Scientists are tracking a variety of environmental indicators including: air temperature, snow cover, sea ice extent, ocean temperature, vegetation growth, and wildlife behavior. In comparison to 2012, most indicators this year were closer to their long-term averages, but signs of change (fueled by long-term warming) were still present....
