• SRU will pay homage to the life of the late Rev. Martin Luther King Jr. with a lecture at 4 p.m. today by Todd Allen, associate professor of communication at Geneva College in SRU's University Union.

• The SRU Dance Theatre will perform at 8 p.m. Jan 28 to 30 in Miller Auditorium at the SRU campus.

"Defying Gravity" features the work of three guest artists as well as Teena Custer, SRU dance instructor, and eight SRU student choreographers.

Tickets are $10 for the public and $5 for SRU students with ID. Tickets are available by calling 724-738-4926.

• CMU's School of Music will present Gilbert and Sullivan's classic comic opera "The Mikado" at 8 p.m. today through Sunday with a matinee at 2 p.m. Sunday in the Purnell Center's Philip Chosky Theater. Admission is $15 for adults, $12 for senior citizens and $10 for students. Call 412-268-2407.• The Miller Gallery at CMU hosts "Experimental Geography," an exhibition by 19 artists and teams from seven countries, through Jan. 31.Admission to the gallery in the Purnell Center for the Arts on campus is free. Hours are noon to 6 p.m. Tuesdays through Sundays. Call 412-268-3618.