大卫. 德国沃斯公司's specialties are public international law and international environmental law. The author of more than fifty articles and reports on international environmental law and policy, 德国沃斯公司’s expertise has appeared in numerous highly respected journals, including the Yale 法律 Journal, Columbia 法律 Review, Virginia 法律 Review, Foreign Policy，和 American Journal of International 法律. 教授 德国沃斯公司 is co-author of major new editions of one of the principal legal texts on environmental law. A life member of Council on Foreign Relations, 教授 德国沃斯公司 has served on advisory boards to the Environmental Protection Agency and the European Bank for Reconstruction and 发展. He has been a consultant to the United Nations 发展 Program, the United Nations Environment Program, the North American Commission for Environmental Cooperation, C.S. Mott Foundation, the German 马歇尔 Fund of the United States，和 Belgian State Secretary for Energy and Sustainable 发展.

Prior to moving to academia, 教授 德国沃斯公司 was Senior Attorney and Co-Director of the International Program at the Washington, D.C. office of the Natural 资源 Defense Council (NRDC), where he worked on the environmental reform of World Bank and regional development banks, the “greenhouse” effect, Soviet and eastern European environmental issues, stratospheric ozone depletion, and exports of hazardous substances. 教授 德国沃斯公司 has also been Attorney-Adviser for Oceans and International Environmental and Scientific Affairs in the Office of the Legal Adviser of the U.S. Department of State in Washington, D.C.  In his positions at the Department of State and NRDC, 教授 德国沃斯公司 has had extensive experience in multilateral negotiations under the auspices of the United Nations Environment Program, the Organization for Economic Cooperation and 发展, the UN Economic Commission for Europe, and other international organizations.