Jennings Environmental Education Center, Route 528 near the intersection of Routes 8 and 173, will host "And Along Came a Spider!" at 2 p.m. Sunday. Sarah Lyle will challenge the misconceptions about spiders and reveal facts about the creatures. Jennings is open from 8 a.m. to 4 p.m. weekdays and on weekends as scheduled. The trails are open daily from sunrise to sunset. Call 724-794-6011 to confirm programs.