On a flat map, Greenland looks like a lonely white expanse at the top of the world. On the right projections, it jumps out as the hinge between North America, Europe and the Arctic Ocean, a place ...

Animated map of the North Pole showing the progressive decline of the sea ice in the Arctic over the last 45 years, with maximum (red line) and minimum extents (blue line) to allow for comparison over ...

Climate change and the associated rising temperatures are melting more and more frozen ground in the Arctic. This dissolved matter contains large amounts of organic carbon which is flowing into the ...

Audio is not provided for this article. In recent years, researchers have shown that variations in GPS and Galileo signals after they reflect off Earth’s surface—an approach known as GNSS ...