A recipient of the prestigious MacArthur Foundation genius award, Columbus, Ohio-based ANN HAMILTON is an internationally renowned artist known for her labor-intensive, site-specific installations. She's carpeted vast rooms with pennies, filled them with human and animal teeth or flowers, and often engaged the audience through smell, touch, sound, temperature and light. Her ambitious works have commented upon labor, the relationship between humans and animals, oppression and slavery and offered startling visual alternatives to verbal language. They are also all about place, making Hamilton a fitting choice for the Metropolitan Public Art Coalition's discussion on the importance of place in art. Part of the MPAC's "Perspectives in Public Art" series, Hamilton's talk Tues., JAN. 30, deals in part with her recent public installation voce in Kumamoto, Japan (pictured). Free. 7 p.m. Rialto Center for the Arts, 80 Forsyth St. 404-651-4727. www.mpacatlanta.org.