The 13th Annual Mid America Alliance for African Studies Conference will start at 10 a.m. in the Pine Rooms in the Kansas Union. Tickets are $20 for students and $40 for faculty.

Professor Michael Crawford will present the lecture “The genetics of biological aging in Mennonite communities” at noon in 633 Fraser Hall.

David Krasner will present the seminar “Performing Billie Holliday” at 1:30 p.m. in the Seminar Room in the Hall Center for the humanities.

Dr. Robert H. Singer, Yeshiva University, will present the seminar “Observing Single mRNA Molecules in Living Cells Using Advance Microscopy” at 3 p.m. in 1001 Malott Hall.

Brent Metz will present the Latin American seminar “Chort Maya Indigeneity in Honduras” at 3:30 p.m. in the Seminar Room at Hall Center of the humanities.

John Deigh will present the lecture “Moral Agency and Criminal Insanity” at 4:30 p.m. in 305 Courtside Room in the Burge Union.

The opening events for “Aaron Douglas: African American Modernist” will start at 5:30 p.m. at the Spencer Museum of Art.

The Kansas Concert Opera will perform “Tosca” at 7:30 p.m. at the Lawrence Arts Center. Tickets are $8 for students and $12 for adults.