Mary is widely recognized for a career as one of the world’s most important environmental regulators. As chair of the California Air and Resources Board (CARB), California’s powerful air-pollution and climate regulatory agency from 1975-1982 and then from 2007-2020, she led California’s leading battle to cut smog and carbon emissions. Under Mary’s leadership, CARB enacted the first comprehensive cap on industrial greenhouse gas emissions by any major regulatory agency in the world. Mary is currently a professor at UCLA Law School and holds visiting appointments in the Columbia Global Energy Program and the Cornell Atkinson Center for a Sustainable Future. She also serves as the Vice-Chair of the China-California Climate Center and Co-Chair of the Commission on the Future of Mobility.