León, Guanajuato

Arctic blast to usher in rapid freeze-up, snow potential behind early-week flooding threat in Northeast

Northeasterners will need all types of outerwear early this week as soaking rain and a surge of milder air are quickly followed by tumbling temperatures and perhaps even some snow.

Scientists say new theory 'solves 2 mysteries about Snowball Earth'

Millions of years ago, Earth was completely covered by snow and ice -- and now researchers say they may have answered one of the most enduring questions about that mysterious stage of the planet's existence.

Northern-tier snow to bring tricky travel conditions into Monday

As a storm shifts from the northern Rockies to the Great Lakes, a swath of snow will spread from Montana to Michigan, bringing difficult travel for the region into Monday. On Sunday morning, the storm was dropping snow across parts of Montana, Wyoming and western Colorado. For the most part, snow accumulations were light, with...