5 p.m.,  111 Adams Ave., Lewes. Hosted by Lewes Public Library which will include a screening and panel discussion of “Salted Earth,” an award-winning short film about the effects of climate change on the Delmarva Peninsula.  The Earth Week event is co-sponsored by the library, Delaware Environmental Institute at the University of Delaware, Delaware Interfaith Power & Light, and Unitarian Universalists of Southern Delaware. Space is limited, and reservations are required. To sign up, go to lewes.lib.de.us or call the library at 302-645-2733.