The relentless early-season cold isn't letting up, as multiple clipper systems will bring reinforcing shots of cold air into the weekend. Here's when it will arrive, who it will affect and how cold it will get.

Typical for this time of year, another atmospheric river is set to slam into the Pacific Northwest this week. Days of heavy rainfall and mountain snowfall are expected, and atmospheric rivers are necessary and beneficial, their impacts can still be dangerous and bring hazardous conditions.

New climate research warns that a wetter Sahara Desert could be in our future, as major rainfall increases and reduced Saharan dust threaten to intensify the Atlantic hurricane season, worsen drought and famine in Africa and boost extreme weather globally.

The Surface Water Ocean Topography satellite captured high resolution measurements of this summer’s Pacific tsunami. The satellite imagery is the first of its kind, bringing new detail and insight to how these massive waves form.

Bringing a real Christmas tree into your warm living room can accidentally wake up thousands of dormant bugs, turning your cozy holiday into a surprise visit from nature.