A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

Overall, not surprisingly, folks wanting an early spring better head south, which is already seeing springlike signs.

Around 40 million people in the U.S. are under a winter storm warning from an unusual blast of severe cold weather and snow ...

Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures as residents along the East Coast contend with a thick blanket of snow — and more ...

A rare frigid storm is charging through Texas and the northern Gulf Coast, blanketing New Orleans and Houston with snow, ...

Once warm air from the northern Plains swoop downward, typical January temperatures will resume in the Upper Midwest, the ...

January has been brutally cold for many east of the Rockies, but a pattern change means the need for winter coats can take a ...

The developing storm system is forecast to bring heavy snow, crippling ice and severe weather across the country through the next three days.

A rare winter storm charging through Texas and the northern Gulf Coast has closed highways and airports and prompted the ...