Pollution Buildup At Conowingo Dam May Harm Chesapeake Bay Cleanup
A Maryland dam has been helping to clean up the Chesapeake Bay by holding back sediment that can harm aquatic life. But now the dam's sediment pools have filled up earlier than projected.
Đọc tiếp trên NPR
August 23, 2017 at 05:39AM
Environment
Thứ Tư, 23 tháng 8, 2017
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