March 19, Coastal Discoveries.   Last year William Sargent finished his fourth book about the politics of erosion on Plum Island and needed to clear his head.  So he decided to embark on a series of rambles from New Hampshire to Gloucester.  His purpose was to investigate the natural history of this beautiful coast.  Join us to learn about the troubling new environmental catastrophe he discovered.  Sign up at https://www.eventbrite.com/e/coastal-discoveries-tickets-55903150829