This course introduces the use of quantitative methods in environmental analysis. Students will learn how to apply basic principles of natural science to a variety of globally important environmental problems. Topics covered include estimation techniques and stock-flow modeling; population and resource use; biogeochemical cycles; acid deposition; climate change; stratospheric ozone depletion; toxic pollution and public health; and ionizing radiation. Coursework features weekly readings, bi-weekly quantitative problem sets, a mid-term exam, and a final exam. This is a challenging course for students with limited math and science backgrounds, but no student who works diligently will be left behind. The methods taught in this course have proven useful not only for aspiring environmental scientists, but also for those working in public policy, environmental law, ecological economics, international development, business, and journalism.