“At the Edge of Shelter: Homelessness in Chicago,” an exhibit of work by local photographers Tom Arndt, Angela Kelly, and Marc PoKempner, runs through April 12 at the Art Institute, Michigan at Adams, 443-4600. Museum hours are 10:30 to 4:30 weekdays (10:30 to 8 Tuesdays), 10 to 5 Saturdays, and noon to 5 Sundays; admission is a suggested donation of $6, $3 for seniors, students, and children 5 to 14.