When Ogden Dunes began hardening the shoreline against Lake Michigan’s attacks, Save the Dunes drew a line in the sand. So did the Indiana Department of Natural Resources. So did the U.S. Army Corps ...

In some places, sand dunes protect shorelines from the onslaught of ocean waves. In other places, the dunes themselves are on the move, and threaten human structures. Host Flora Lichtman talks with ...

Last summer, Stephanie McNamara got her first glimpse of Great Sand Dunes National Park and Preserve in southern Colorado. The park is a monument to sand, where dunes stretch across 30 square miles ...