Happenings

 Exhibitions

University Art Gallery, Rediscover: The Collection Revealed, works from the gallery’s eclectic permanent collection, used as a teaching collection for art history students, through Oct. 19, Frick Fine Arts Building, 650 Schenley Dr., 412-648-2423

Senator John Heinz History Center, From Slavery to Freedom, Antislavery Movement to the Modern Quest for Civil Rights, including material from Pitt-produced exhibition Free at Last? Slavery in Pittsburgh in the 18th and 19th Centuries displayed at Heinz History Center in 2008-09, ongoing, 1212 Smallman St., Strip District

Carnegie Museum of Natural History, Roads of Arabia: Archaeology & History of the Kingdom of Saudi Arabia, archaeological materials exploring the cultural history of the Arabian Peninsula, through Nov. 3, 4400 Forbes Ave., 412-622-3131, www.carnegiemnh.org

Phipps Conservatory and Botanical Gardens, Butterfly Forest, various butterfly species, including Monarchs and Zebra Longwings, through Sept. 2; Summer Flower Show: Glass in the Gardens, featuring lifelike floral forms, whimsical long-legged birds, rotating stained-glass towers, and a large, articulated woolly mammoth skeleton, through Oct. 6, One Schenley Park, Oakland, 412-622-6914, www.phipps.conservatory.org

Filmmakers Galleries, Pigment & Silver, photography by Ellen Bjerklie-Hanna, A. Jason Coleman, Danielle Goshay, Brenda Roger, and Cynthia Zordich, through Sept. 13, 477 Melwood Ave., 412-681-5449, www.pghfilmmakers.org

Miscellaneous

Hillman Alfresco—Party on the Plaza, event to welcome back students to Hillman Library, live entertainment, food, beverages, music, raffles, and giveaways, 11 a.m.-3 p.m., Aug. 29, Hillman Library patio, 3960 Forbes Ave

Phipps Conservatory and Botanical Gardens, Farmers at Phipps, shop for organic produce from local farms and meet the farmers who grew them, 2:30-6:30 every Wednesday through October, One Schenley Park, Oakland, 412-622-6914, www.phipps.conservatory.org

Pitt PhD Dissertation Defenses

Krishna Subramanian, School of Medicine’s Center for Neuroscience, “Restoration of Motor and Non-Motor Functions by Neurotrophic Factors in Nonhuman Primates with Nigral Dopamine Depletion,” 9 a.m. Aug. 22, 1495 Biomedical Science Tower

Saeed Amizadeh, Dietrich School of Arts and Sciences’ Intelligent Systems Program, “Non-Parametric Graph-Based Methods for Large-Scale Problems,” noon Aug. 28, 5317 Sennott Square