Earth’s magnetic north is not static. Like an anchorless buoy pushed by ocean waves, the magnetic field is constantly on the move as liquid iron sloshes around in the planet’s outer core.

A polar vortex could cause light snow over the weekend in Knoxville. A polar vortex is to blame for freezing temperatures.

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

Snow and ice across the U.S. South are expected to relinquish their grip only slowly as the weekend continues.

A powerful winter storm that dumped heavy snow and glazed roads with ice across much of Texas and Oklahoma lumbered eastward ...

Sleet, snow and freezing rain are expected across several states in the south, leading to school cancellations and flight ...

An area stretching from Texas to Tennessee braced Wednesday for the possible arrival of freezing rain and snow even as some ...

Chile's President Gabriel Boric has become the first leader in the Americas to visit the South Pole, after arriving at a US base there. The president said his visit to the Amundsen-Scott South ...

It manifests itself into a large "ring" above Earth's geomagnetic North Pole and is known as the aurora oval. During times of heightened solar activity, the aurora oval can expand more southern ...