These factors, especially in the Balcones Escarpment landscape in Central Texas, make Flash Flood Alley one of the most flood ...

A map shows the ozone hole above Antarctica in September, when it was the size of North America. The ozone protects the Earth from the sun's ultraviolet rays.

The glacier, in Wrangell-St. Elias National Park on the state's southeastern coast, covers around 1,680 square miles (4,350 square kilometers), making it North America's largest glacier and the ...