Bitter gusts are sweeping the frozen Potomac River, driving the wind chill into the teens. On the western front of the United ...

Nature’s natural colors can be breathtaking. Tropical birds are famous for their brightly colored feathers, and many fish ...

A rare and stunning snowfall recently blanketed parts of Earth’s deserts, transforming dry landscapes into icy wonderlands. Scientists are studying what causes these unusual events—and whether they’re ...