Investigates major problems in the study and understanding of Quaternary climate variation, in seminar format. Each year one major topic will be addressed, such as: the physics and chemistry of the Ice Age ocean circulation; the theory and mechanics of glacial/interglacial atmospheric C02 change; or the origins of the 20, 40, and 100 kyr orbital (Milankovitch) climate cycles. Prereqs., introduction geology, climatology or oceanography. Recommended prereqs., paleoclimatology or paleoceanography.