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The amount of methane in
Earth's atmosphere shot up in 2007, bringing to an end approximately a
decade in which atmospheric levels of the potent greenhouse gas were
essentially stable.
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A fanciful vision of a lunar traffic jam won the first annual NASA Lunar Art Contest sponsored by NASA's Langley Research Center in Hampton, Va.
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NASA's Mars rover Opportunity is scheduled to begin a descent down a rock-paved slope into the Red Planet's massive Victoria Crater.
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