Rosina’s research interests lie at the interface of science and policy--principally on issues related to climate change adaptation and mitigation at the national and international levels. She teaches courses on Climate Policy. She has been named the new Chair of the Global Environment Facility’s Science and Technical Advisory Panel, and serves on President Obama's Council of Advisors on Science and Technology (PCAST). Rosina is an Adaptation Fellow at the World Bank, leads the Adaptation Chapter for the Congressionally-mandated U.S. National Climate assessment, and is review editor for the Intergovernmental Panel on Climate Change. She serves on the Boards of several Foundations and NGOs and has lectured on every continent. Bierbaum served in both the executive and legislative branches of Government for two decades--as the Senate-confirmed director of the White House Office of Science and Technology Policy’s Environment Division, and in multiple capacities at the Congressional Office of Technology Assessment. Rosina was Dean of SEAS from 2001-2011, during which time she oversaw the creation of a new undergraduate Program in the Environment, five new dual Master’s degrees across campus, and tripled interdisciplinary research.