The mysteries of the ocean’s ‘twilight zone' still being unraveled; plus the oldest NPS ranger Betty Reid Soskin died at 104

Parts of US may experience warmest Christmas on record; plus, a new study shows LA wildfires linked to spike in heart, lung emergencies

Largest wildlife overpass in North America opens; plus, ‘Rusting rivers’ threatening Alaska’s Arctic after years of permafrost thaw

Powerful Northeast storm to usher in springlike warmth ;plus, Pineapple express sets sights on Oregon into Friday night

White Christmas forecast 2025: Storm may deliver last-minute snow before holidays

Relentless storms keep dangerous flood risk high across the Pacific Northwest

Early Christmas travel at risk as eastern US storm brings rain, fog and pockets of ice

Pineapple Express poised to unleash serious flood threat for Pacific Northwest; plus, Central and Eastern US to warm this week

Geminid meteor shower peak to dazzle this weekend; plus does your dog need a jacket this winter?

Death Valley's ancient lake has returned after record rainfall

Winter wonderland vs snow drought: Where snow is (and isn’t) piling up this season

Will cold clipper storms finally bring snow to NYC, Philly and Boston?

Back-to-back atmospheric rivers to unleash major flooding in Pacific Northwest; plus, the polar vortex will shift unleashing more bitter cold in Plains and Northeast

Atmospheric river on the way for PNW, a polar vortex shift will unleash more bitter cold, and Mount Washington blasted by 120-mph winds

Will it snow on Christmas? These cities have the best chance

Christmas tree myths: What really keeps your tree fresher longer

Minneapolis was briefly colder than Mars as wintry weather expands across US

Polar vortex to bring triple whammy of Arctic cold to US through mid-December

Record snow hits Midwest with the potential for weekend snow in eastern US to follow 1st of three polar vortex episodes

December 2025 astronomy guide: Supermoon, Geminids and the month’s best sky events; plus, Winter storm to ring in December from Midwest to Northeast