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 ...

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 ...

When many types of fish are available, seals stay longer and dive deeper, even in dangerous areas. This shows that food variety can outweigh fear. In safer areas, seals spend less time diving because ...

WASHINGTON (AP) — Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way that will send much of the United States a devastating dose of winter weather ...