We’ve turned the corner towards spring, and Cape Cod’s environmental organizations have dozens of exciting events and programs lined up for April’s school vacation week. Cape Cod Museum of Natural History 869 Main Street, Brewster: 508-896-3867 Learn about the flora and fauna while exploring the salt marsh and tidal flats of Cape Cod bay on daily field walks led by expert naturalists. On April 19, join Michael Leblanc, known for his “Wolf Talk” program, for an educational pre