Lecture. Alain Dubos, president of the Nobel Peace Prize-winning organization Doctors Without Borders, discusses “”Engaging in Humanitarianism.”” Noon. Free. UA Cancer Center, Kiewit Auditorium, Room 2951
Lecture. Lecturer Jim Childress, ofthe University of California, Santa Barbara, will discuss “”Not a Redwood Forest: Explorations of Deep-Sea Hydrothermal Vent Ecosystems Around the World.”” In 2000, Childress was named a Distinguished Lecturer by Ridge 2000, an interdisciplinary research program sponsored by the National Science Foundation. 4 p.m. Free. Bio Sciences West building, Room 301
Seminar. Kalervo Hiltunen discusses “”Mitochondrial Fatty Acid Synthesis ðð- From Respiratory Deficient Yeast to Cardiomyopathic Mice.”” Hiltunen is a part of the Department of Biochemistry at the University of Oulu in Finland. 4 p.m. Free. Bio Sciences West building, Room 208
Entertainment
Concert. The UA School of Music presents its “”Prism Concert.”” This concert combines performances by the Arizona Choir, the UA Wind Ensemble and the Arizona Symphony Orchestra. 7:30 p.m. Free. UA School of Music, Crowder Hall
Film. The movie “”Ghost Rider”” will be playing twice. 7 p.m., 10 p.m. $3. Student Union Memorial Center, Gallagher Theater
Exhibit. “”Making A Statement: A community-based project questioning the role of the idea, the object, and the author in contemporary art”” is ongoing. This project is co-hosted by Brookhart Jonquil and Sanya Glisic. All day. Free. Student Union Memorial Center, Kachina Gallery
Exhibit. The UA School of Art is hosting the 13th annual Wildcat Art Exhibition. This exhibition features work from students from around Tucson. 10 a.m. to 5 p.m. Free. SUMC, Union Gallery
Halo 2 tournament. UA students can participate in this video game event. 5 p.m. $3. SUMC, Games Room