Associated Artists of Butler County hosts the 2012 Nature & Wildlife Exhibit, featuring the work of about 30 artists in more than 60 pieces of art, including paintings, photography and sculpture, through Sept. 1 at The Art Center, 344 S. Main St. Regular hours are noon to 6 p.m. Wednesdays through Saturdays. Admission is free. Call 724-283-6922 or visit www.aabcArtCenter.com.

Maridon Museum, 322 N. McKean St., presents a travel lecture on Uganda by Susan Linville at 6:30 p.m. Wednesday. The museum is open 11 a.m. to 4 p.m. Wednesdays through Saturdays. Admission is $4 for adults, $3 for senior citizens and students, and free for children younger than 8, who must be accompanied by an adult. Guided tours are available with advanced notice for no extra charge. Call 724-282-0123 or visit www.maridon.org.

Saxonburg Area Artists Cooperative, 215 Main St. rear, in Saxonburg, hosts “The Sisters Show,” featuring the artwork of Pam and Christine Palamidessi through Saturday. Admission is free. Gallery hours are 1 to 9 p.m. Fridays and 10 a.m. to 8 p.m. Saturdays, with other hours by arrangement or during events. Call 412-260-5779, 724-352-1795 or 412-849-4648.

National Transit Art Center, 206-210 Seneca St., Oil City, has named potter Paul O'Neil as its featured artist for August. Hours are 10 a.m. to 4 p.m. Tuesdays, Thursdays, Fridays and Saturdays. Admission is free. Call 814-677-3707.

Carnegie Museum of Art, 4400 Forbes Ave., presents “Natural History,” a playful exhibition that explores the myriad ways contemporary artists respond to nature, through Oct. 14. “Impressionism in a New Light: From Monet to Stieglitz” continues through Aug. 26. Regular museum hours are 10 a.m. to 5 p.m. Tuesdays through Saturdays, with additional hours until 8 p.m. Thursdays, and noon to 5 p.m. Sundays. Admission, which includes the Carnegie Museum of Natural History, is $17.95 for adults, $14.95 for senior citizens age 65 and older, $11.95 for students with ID and children ages 3 to 18, and free for children younger than 3. Call 412-622-3131 or visit www.cmoa.org.Society for Contemporary Craft, 2100 Smallman St., hosts Humor in Craft through Oct. 27. This world premiere exhibition presents ironic, political, sarcastic and amusing works by 32 makers from across the United States and abroad. SCC gallery hours are 10 a.m. to 5 p.m. Mondays through Saturdays; closed holidays. Admission is free but donations are accepted. Call 412-261-7003. A glass exhibit, celebrating the 50th anniversary of the development of studio art glass in America, is going on through Sept. 30 at SCC's satellite gallery at BNY Mellon Center, 500 Grant St., in the lobby of the Steel Plaza T-Station.