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Science on the Graveyard Shift
By dark of night in an old graveyard, something rustles. It's a scientist, probing the dirt for secrets. View the photo gallery.
Credit: National Science Foundation
Graveyards are excellent research sites; their soil lies undisturbed.
Credit: Kyungsoo Yoo
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Anthony Aufdenkampe and Rolf Aalto, to right of tree, inspect an ancient oak in a cemetery in London Grove, Pa.
Credit: Kyungsoo Yoo
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This "Penn Oak," or white oak, was standing when William Penn arrived in Pennsylvania in 1682.
Credit: Beth Wenell
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Anthony Aufdenkampe (right), and Rolf Aalto, shown at London Grove Friends Meeting cemetery.
Credit: Kyungsoo Yoo
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Map of the Christina River Basin, site of one of six NSF Critical Zone Observatories (CZOs).
Credit: Wikimedia Commons
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The Christina River flows through three states: Pennsylvania, Maryland and Delaware.
Credit: Wikimedia Commons
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