Yahn Planetarium has new public show hours Saturdays at 10:00 a.m. (kids show) and 11:30 a.m. (general audience). Visit behrend.psu.edu/yahnplanetarium for presentation and ticket information.
Dr. Todd Cook, associate professor of biology, is a vertebrate paleontologist who studies ancient sharks and rays from the Paleozoic and Mesozoic eras in North America, North Africa, and Australia.
