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Back-to-back earthquakes jolt Los Angeles area within hours
An earthquake with a preliminary magnitude of 3.5 rattled the L.A. metropolitan area early Saturday just hours after a ...
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15 Most Polluted Cities in the United States: Is Yours on the List?
When you think of the United States, perhaps things like baseball, McDonald’s, the New York Times Square, or the Grand Canyon are the first things to pop into your mind. But what about pollution?