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A tornado touched down at Denver International Airport as a severe weather system moved through the area. more >
Warmth Ahead for East, Midwest Thanks to Alaska
PHOTO: Tornado Strikes Denver International Airport
'Lost' Medieval City Discovered Beneath Cambodian Jungle
Ice shelves lose more mass where the ice meets the sea than previously thought.
A normally dull star in Ursa Major, the Great Bear constellation, give off an incredible flare while scientists watched, increasing its brightness 15-fold in just three minutes, before returning to normal.