New radar maps from the Cornell Lab of Ornithology show real-time nocturnal bird migration across the United States.

Tropical Storm Lorena is churning in the Pacific, bringing the possibility of life-threatening conditions and other hazards ...

A geomagnetic storm could make aurora borealis—or the northern lights—visible across parts of the United States overnight ...

Iona was a tropical depression in the North Pacific Ocean late Friday Samoa time, the Joint Typhoon Warning Center said in its latest advisory. The New York Times Iona became the first named storm of ...