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Philadelphia will experience a taste of spring before colder air and a possible storm arrives at midweek. more >
Oil slicks spotted by the Vietnamese air force offered first sign a jetliner carrying 239 people crashed. Some passengers on plane apparently used stolen passports.
Temperature Swings, Snowstorm Risk to Continue
Seas to Build as Search Continues for Missing Malaysian Plane
Climate Change Threatens Power Infrastructure, Poses a 'National Crisis'
See the weather conditions anticipated for some of the top vacation destinations for spring breakers.
The drought in California has led to a record-tying surge in air pollution levels across the state, air quality officials said.