A long legacy of industrial pollution has made the Ohio the archetype of a "working" river. But the National Wildlife Federation thinks the Ohio could be transformed into a recreation destination.
Interstate cooperation has been crucial to restoring waters in the Great Lakes and Chesapeake Bay. But so far, marshaling a regional effort to improve the Ohio River has proven difficult.
Pittsburgh-area schools have invested big money in modern artificial surfaces for football and soccer fields. But there's growing concern that they may pose a health risk.
