The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and keeps some of the ...

WASHINGTON — The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison. Even Mars has been ...

The polar vortex is a persistent area of low pressure dozens of miles above the earth's poles (both northern and southern). Because the vortex is so high up in the atmosphere, and because it's ...

The purpose is to see if the cold spell that send much of the U.S. shivering was due to the "polar vortex." NOAA concluded that there wasn't sufficient evidence to link this most recent cold blast ...

The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and keeps some of the coldest ...

The sibling filmmakers George and Teddy Kunhardt use a straightforward approach in this documentary about the Washington Post publisher, letting a pioneer shine. By Sheri Linden PG Animation ...