Saturday, August 13, 10–11:30 a.m. (ages 6–8) and 2–3:30 p.m. (ages 9–12) at Historic Jefferson College. EXPLORE! The Opossum. Learn how America end up with our only marsupial, the opossum. They may look like giant rats, but opossums are unique critters that have a bad reputation. Parents and grand-parents are always welcome to stay and learn. $10 pre-registration required. For more information call 601-442-2901 or email Jefferson College..