Three large craters have been discovered in northern Sibera, and experts are at a loss to explain why.
36-Hour Precipitation Outlook
Time Lapse Tuesday: Terra Sacra
Weather helps showcase these remote landscapes and iconic ancient monuments.
Ebola outbreak 2014: Should we be worried?
The Ebola outbreak in western Africa is the worst epidemic on record. Should we ...
Is this summer cooler than 2013?
A look at the number of days over 30 degrees this summer reveals the answer.