A beautiful river awaits you at the end of this Arizona hike, but the journey there and back is not for beginners or anyone unsure of their abilities.

Few places on Earth inspire as much awe as Arizona's Grand Canyon. This massive chasm, carved over millions of years by the ...

It is a normal pattern that is stronger in the winter and keeps some of the coldest weather bottled up near the North Pole. But at times some of the vortex can break off or move south, bringing ...

Weather forces in the arctic are combining to push the chilly air that usually stays near the North Pole into the U.S. and Europe. Over the weekend, at least nine people were killed, eight of them ...