Zoo Atlanta is offering free admission to residents and government employees of Fulton County and the City of Atlanta Aug. 20-21. The offer is valid for two adults and up to four children per family. Guests must provide a form of identification such as a Georgia driver’s license, voter registration, utility bill or employee I.D. The zoo opens at 9:30 a.m. both days. Information: 404-624-9453, www.zooatlanta.org.