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By blasting a stack of minerals with a four-meter-long gun, scientists have found a new clue about the backstory of a very strange rock.
Did the minerals on our planet arise in a predictable fashion, or did they result from chance events? The answers could eventually help scientists identify planets likely to harbor life.
When scientists traced a museum rock back to its origins, they uncovered mysteries about the early solar system.
Evidence from Southwestern deserts suggests that oxygen-breathing organisms arose on land rather than in the seas.
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