Experts warn of climate change's impact on Chesapeake Bay
By DAVID McFADDEN, Associated Press CONOWINGO, Maryland (AP) — When the Conowingo Dam opened to fanfare nearly a century ago, the massive wall of concrete and steel began its job of harnessing water power in northern Maryland. It also quietly provided a side benefit: trapping sediment and silt before it could flow miles downstream and pollute the Chesapeake Bay, the nation's largest estuary. The old