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Environment News: Concrete to Help Oysters?

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      • © 2010 National Geographic; partially funded by NSF; field producing and videography by Fritz Faerber

        Concrete to Help Oysters?

        November 12, 2010---Oyster reefs, once so plentiful they blocked shipping traffic, have been in decline due to overharvesting, pollution, and recent oil spill activities, experts say. But scientists are working to restore the reefs using special material called oysterkrete.

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