The pan-arctic map illustrates the extent of human activity at night. Color coding: black – unlit, orange – lit, yellow – increasing illumination, purple – decreasing illumination. Map: Cengiz Akandil, University of Zurich; Natural Earth The...
Where does a glacier begin, where does the ice sheet end? This question is not so easy to answer in Antarctica. Ann Windnagel and her team set the boundaries and ranked the largest ice masses by area (excluding ice sheets). (Photo: Dr Michael Wenger) Again and again...
