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While temperatures will be well above average in Pittsburgh this weekend, colder air will arrive next week for the final days of 2014. more >
Cold to Make a Comeback Across US in Final Days of 2014
Snow to Disrupt Travel From France, Germany to Bulgaria This Weekend
Year in Review: The Most-Read Weather Stories of 2014
The 2004 Indian Ocean Tsunami is the deadliest tsunami in recorded history, claiming nearly 230,000 lives. It has altered the way tsunami research is conducted today.
As scientists map the universe, what they can’t see—dark energy and dark matter—is key.