Born from thunderstorms, tornadoes can rip apart homes and toss cars around like toys. These are some of the most vicious twisters to hit the U.S. in recorded history.
Inconceivable” tornadoes, rated F6, have wind speeds of 319 miles per hour and can hurl cars and refrigerators like missiles.
Scientists monitoring Alaska's volcanoes have been forced to limit real-time tracking of eruptions amid ongoing federal budget cuts -- moves that could mean delays in getting vital information...
Yellowstone's underground volcanic plumbing is bigger and better connected than scientists thought, researchers said Wednesday.
If man-made, it is the most powerful quake to be blamed on deep injections of wastewater, according to a study published Tuesday by the journal Geology.
Massive volcanic eruptions may have led to the extermination of half of Earth's species some 200 million years ago, a new study suggests.
The threat of global warming may stretch so far beyond Earth that it affects meteorites millions of miles away in space -- at least according to one CNN anchor.
Citing criticism of the handling of Hurricane Sandy and the absence of alerts, the National Hurricane Center will now advise consumers about dangerous conditions even after winds have dropped.
Tornado season got off to a record start this year, with more twisters by mid-April than ever seen for that period since records began in 1950. After May, though, the number of tornadoes dropped...