Bill Cohen

Center Coordinator

Bill Cohen oversees the Kleinman Center's office needs, supervises public events, tracks the budget, and provides technical support across many platforms. When possible, he also dives into design and research projects. Before settling in Philadelphia, Cohen spent three years teaching English in Thailand, Spain, and France. In 2010 he served as the liaison for high schools from five European countries on a successful E.U. grant proposal, creating an exchange program for students pursuing alternative energy research. After returning to the United States, Cohen helped start a local, artisan food company, Righteous Felon.

Cohen is pursuing a master of science in applied geoscience at the University of Pennsylvania, focusing on sustainable development and green stormwater infrastructure.

Cornelia Colijn

Executive Director

Cory Colijn envisions, plans, and manages all center programming, while building connections with students, faculty, and leaders in the energy industry. She joined the Kleinman Center team after serving as the administrative director of Penn’s Professional Programs in Earth and Environmental Science. Prior to coming to Penn, she worked for several Philadelphia-based nonprofits, focusing on the ecological restoration of Philadelphia’s extensive park system.

Colijn holds a master's degree in applied geoscience and a bachelor's degree in earth and environmental science, both from the University of Pennsylvania.



Jessica Goldberg

Administrative Assistant

Jessica Goldberg supports the Kleinman Center’s office needs, events, budget, and schedule. She came to the Kleinman Center with five years of nonprofit experience across Philadelphia. Her dedication to community development has led her to opportunities improving access to healthcare, housing, food, and education. She previously served as an outreach specialist assisting individuals in applying for benefits including Medicaid, Medicare, food and energy assistance, and housing benefits.  Jessica holds a B.A. in adult and organizational development with a minor in geography and urban studies from Temple University.

Mark Alan Hughes

Founding Faculty Director


Mark Alan Hughes is a professor of practice at the University of Pennsylvania’s School of Design and founding faculty director of the Kleinman Center for Energy Policy. He is also the founding faculty director of the Fels Policy Research Initiative at Penn’s School of Arts and Sciences, a faculty fellow of the Penn Institute for Urban Research, a senior fellow of the Wharton School’s Initiative for Global Environmental Leadership, and a distinguished scholar in residence at Penn’s Fox Leadership Program. Hughes joined the standing faculty of Princeton University’s Woodrow Wilson School in 1986 at the age of 25 and joined the Penn faculty in 1999. He has published in the leading journals of economic geography, urban economics, political science, policy analysis, and won the National Planning Award for his research in city and regional planning.

He was chief policy adviser to Mayor Michael A. Nutter and the founding director of sustainability for the City of Philadelphia, where he led the creation of the Greenworks Plan. He has designed and fielded national policy research projects in a variety of areas including the Bridges to Work program in transportation, the Transitional Work Corporation in job training and placement, the Campaign for Working Families in EITC participation, and the Energy Efficient Buildings Hub in regional economic development. This work has been funded by H.U.D., H.H.S., D.O.E., Ford, Rockefeller, Pew, Casey, WmPenn, and others.

Hughes earned a Ph.D. in regional science from the University of Pennsylvania, and a B.A. from Swarthmore College.


Angela Pachon

Research Director

Angela Pachon manages our faculty grants program and develops scholarship and research collaborations across campus and beyond. She is also the author of many policy digests. She comes to the Kleinman Center with more than ten years of international experience as a regulatory economist. From 2006 to 2012, Pachon was a policy advisor to the Ontario Energy Board where she participated in the development of regulatory initiatives for gas and electricity utilities. Prior to that, she served as an analyst and consultant at NERA Economic Consulting in London, England.

Pachon earned her master of science in local economic development from the London School of Economics, and her B.S. degree from Pontificia Universidad Javeriana, in Bogota, Colombia.

Lindsey Samahon

Director of Communications

Lindsey Samahon directs the voice of the Kleinman Center across all platforms. She develops new content, prepares research for publication, serves as the center's press contact, and ultimately strives to grow the center's audience. Samahon is a journalist and digital content producer with more than 20 years of experience telling stories online, in print, and on TV. She is the former managing editor of and former director of PBS Parents. She also worked at U.S. News & World Report, where she helped launch the first university rankings online. Prior to joining the Penn community, Samahon ran her own digital media consulting company, working with large media outlets (like Comcast/NBCUniversal), nonprofits, and small businesses. 

Samahon holds a master of science in journalism from the Medill School of Journalism at Northwestern University.


Christina Simeone

Director of Policy and External Affairs

Christina Simeone engages in applied research - bringing together analytics, academics, and industry insights - to further the center's mission.

Prior to joining the Kleinman Center, Simeone served as the director of the PennFuture Energy Center for Enterprise and the Environment, where she focused on energy and climate issues that impact Pennsylvania. Simeone worked on federal energy and climate legislation as Policy Director at the Alliance for Climate Protection in Washington, D.C., after spending several years in Harrisburg at the Pennsylvania Department of Environmental Protection (PA DEP), where she worked on climate and energy issues in the Policy Office and as Special Assistant to the Secretary. Additionally, she has experience in private environmental consulting and in the financial management sector.

Simeone holds a master's degree in environmental studies from the University of Pennsylvania, a B.A. in economics from the University of Miami, and B.S. in music industry from Drexel University (with a concentration in opera and piano performance). She is a board member of Philadelphia's Sustainable Energy Fund, former chair of the Climate Change Advisory Committee to the PA DEP, and served as the co-chair to Governor Wolf's transition team for the PA DEP.

Mollie Simon

Communications Coordinator

Mollie Simon manages the center's social media accounts, drafts newsletters and announcements, writes and publishes content for our website, and regularly posts to our blog. Prior to joining the Kleinman Center, she worked in environmental advocacy at both national and local non-profit organizations. She served as a climate and energy fellow at the National Wildlife Federation in Washington, D.C. and the outreach coordinator at Clean Air Council in Philadelphia. Her policy work has primarily focused on Clean Power Plan implementation and regulation of methane emissions from the natural gas sector. 

Simon is currently pursuing a master's degree in environmental studies at the University of Pennsylvania, with a concentration in policy.

Oscar Serpell

Research Associate

Oscar Serpell is a researcher, writer, and data analyst at the Kleinman Center for Energy Policy. He participates on several key research projects at the center and also writes blog posts and policy digests on timely energy policy topics. Serpell has written as a guest contributor for the Penn Sustainability Review and received the Elaine B. Wright Award for Excellence in Applying Environmental Studies to Community Service. He has held several student teaching and administrative positions in the Department of Earth and Environmental Science, the Department of Anthropology, and the Center for Excellence in Environmental Toxicology. 

Serpell has a master's degree in environmental studies and a B.A. in environmental management, both from the University of Pennsylvania.