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04-07-2012, 03:13 AM
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Obama Embraces National Security as Campaign Issue
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02-14-2018, 05:15 PM
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Pulsating aurora spotted in Canada helps explain northern lights' origin
 Scientists have figured out what causes pulsating auroras, a special type of northern lights that blink in the night sky. And it was partly thanks to a lucky observation of the phenomenon in Canada.More...
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