The environmental studies degree program aims to help students find solutions to critical environmental problems our society faces - from global warming to species extinction, from water contamination to soil erosion - through interdisciplinary study of academic fields in both the natural and social sciences. Students who major in environmental studies select a specialization in ecosystems, earth sciences, environmental chemistry, public policy and law, environmental planning, ecological anthropology or environmental economics. BA degrees are available for all specializations, while BS degrees are available in only ecosystems, earth sciences and environmental chemistry. Students can also design their own specialization in consultation with a major advisor.