Armchair Naturalist: Attack of the Invasive Species The problem of 'invasive species' is rated as one of the most pressing environmental problems in the world today -- right up there with climate change. This slide presentation will introduce participants to many of the 'invasives' here in Rhode Island. Learn how the Audubon Society of Rhode Island combat these aliens on our wildlife refuges and discover what you can do to help reduce this problem on your own property. Powder Mill Ledges Wildlife Refuge, 12 Sanderson Road, Smithfield, RI; July 12, 2017; 6:30 pm-8:00 pm; Program Fee: $10/member; $14/non-member. Ages: Adult.