A presentation on environmental science and wildlife will be held at Fiske Public Library at 3:45 p.m. Wednesday. An environmental police officer will discuss what to do when one encounters a wild animal, how to get involved with the conservation of energy and natural resources, and what individuals can do to be environmental watchdogs. The program is free, but canned-good donations for the Wrentham Food Pantry will be accepted. To sign up, visit the library's circulation desk or call the library at 508-384-5440.