Award-winning aerial photographer Cameron Davidson has just completed a 20-year project celebrating the beauty and fragility of the Chesapeake Bay watershed, resulting in the book Chesapeake. See the Bay as you’ve never seen it before, from the headwaters of the Susquehanna to the Blue Ridge Mountains. Cosponsored by WET and SU’s Gulls Going Green. Information: call Karen Lukacs, 443-614-6697.