Rebecca Dell

Rebecca Dell directs the Industry program for the ClimateWorks Foundation. Previously, she worked at the U.S. Department of Energy in the Obama administration, where she coordinated implementation of President Obama’s Climate Action Plan and was a lead analyst and author of the U.S. Quadrennial Energy Review. Before her federal service, Rebecca was a scientist at the Scripps Institution of Oceanography, studying the interaction between the ocean and land-based ice sheets like those in Greenland and Antarctica. She has a Ph.D. in climate science from MIT.

Jan Mazurek, Ph.D.

Jan Mazurek, PhD directs the Aviation and Carbon Dioxide Removal initiatives. She has worked on energy and environmental initiatives at the federal and state level for 30 years. Prior to ClimateWorks, Dr. Mazurek was appointed by then-Governor Schwarzenegger to serve as Science and Technology advisor to the California Air Resources Board. Dr. Mazurek recently served in her spare time on the Biden Climate/Energy/Environment Policy Committee. Before CARB, Dr. Mazurek was a member of the Obama-Biden Presidential Transition Team, advising on U.S. Environmental Protection Agency toxics, pesticides, and children’s health issues. She has published two books with the MIT Press and Johns Hopkins University presses, respectively, and more than 100 other publications, including op-eds in major U.S. newspapers. Dr. Mazurek has testified on environmental policy matters before U.S. Congressional subcommittees. She holds a doctorate from UCLA’s Luskin School of Public Affairs.

Scott Shell


Scott Shell is an architect with over two decades of experience pioneering low-carbon and sustainable architectural design. At ClimateWorks, Scott focuses on opportunities to reduce the carbon intensity of building materials across the globe, including concrete, cement, and steel.

Before joining ClimateWorks Foundation, Scott was a partner at EHDD Architecture, where he advocated for new policies to promote low-carbon and healthy buildings in California. During his tenure, he led the design of many high-performance buildings, including the net zero energy David & Lucile Packard Foundation and Lick-Wilmerding High School Campus Expansion and Renovation. Scott has been recognized for his work as a leading voice among architects for decarbonization in California, including the 2021 USGBC Regional Leadership Award.

Scott frequently speaks on topics of decarbonization and high-performance design. He currently serves as co-chair for advocacy of the Climate Action Committee at AIA California and climate innovation advisor for EHDD Architecture.

Scott earned a bachelor’s degree in architecture from Auburn University and a master’s in humanities from Stanford University.