The New York City subway system was hit with massive delays as extreme heat caused a power outage during the morning commute.

Heat cramps are painful muscle cramps and spasms, usually in the legs and abdomen. They may also be a symptom of heat ...

The National Weather Service has preliminarily classified overnight storms from the Upper Plains to the Midwest as a derecho. The term describes a long-lived line of storms with extreme winds.

The history of the NFL's numbering system has been a bit confusing at times. But at least the players don't wear letters ...