SIDECAR with coastal scientist Peter Phippen and invasives in The Great Marsh

Essex resident Peter Phippen is a hydrogeologist and coastal scientist who has worked for decades with The Great Marsh, a 25,000-acre coastal salt marsh estuary ecosystem that extends from West Gloucester to southern New Hampshire.  It's healthy and beautiful, and strategic in the face of climate change.  This week we talk invasives that are encroaching into this resource.