In a special report today, the Vineyard Gazette embarks on an in-depth examination of erosion, its history, its scientific processes, its human impacts and the implications for the future. Reporters and photographers zoom in on five areas around the Vineyard: Wasque, the South Shore and Chilmark, the Gay Head Cliffs, East Chop Drive and the sweep of coastline from Oak Bluffs to Cape Pogue.  Read our special report on erosion, Living on the Edge.