Our Fellows

The FAS Impact Fellowship is a selective fellowship program that supports the development and placement of emerging scientific and technical talent within high-impact roles across the federal government.

From education to clean energy, immigration, wildfire resilience, national security, and fair housing, Impact Fellows are serving across a variety of federal agencies in roles that augment existing government teams as they confront some of the greatest scientific and social challenges of our time. 

Meet the Fellows

Julia Brown – General Services Administration

Julia Brown is an Associate Fellow with the Office of Evaluation Sciences in the U.S. General Services Administration, where she manages OES’s Evidence and Evaluation Training Series for federal employees. She has also worked on OES research projects in partnership with the Small Business Administration, US Department of the Treasury, and the Internal Revenue Service. Currently a PhD student in Economics at the University of Maryland.

Chris Atkinson – Department of Transportation

Chris Atkinson is Deputy Director of Advanced Research in the Office of the Assistant Secretary for Research and Technology in the Department of Transportation. Chris has worked at the intersection of transportation, mobility and energy for three decades, as an academic, as a consultant, and from 2014 to 2020 as a program director at the Advanced Research Projects Agency-Energy in DOE.

Zac Chase – Office of Educational Technology

Zac Chase serves as Digital Equity Impact Fellow within the Department of Education’s Office of Educational Technology. In his third decade in public education, Zac is leading OET’s development of the new National Education Technology Plan. Zac is returning to OET where he previously led the development of the 2016 NETP, represented ED on President Obama’s Broadband Opportunity Council.

Jasper Cooper – General Services Administration

Jasper Cooper serves as a Portfolio Lead at OES, where he works on projects focused on equitable economic recovery and reducing barriers to accessing government programs. He is particularly interested in how to best match research questions with research designs, including randomized evaluations, machine learning for descriptive analysis, and qualitative methods. Jasper earned a Ph.D. in Political Science from Columbia University, and a masters in Urban and Regional Policy from Sciences Po, Paris.

Betty Cremmins – White House Council on Environmental Quality

Betty Cremmins serves as the Director for Sustainable Supply Chains at the White House Council on Environmental Quality. Previously, she helped expand CDP’s (formerly the Carbon Disclosure Project) global environmental disclosure platform, led corporate engagement for 1t.org (Trillion Trees Platform) with the World Economic Forum, and is a Security Fellow with the Truman National Security Project.

Tim Cronin – Department of Energy

Tim Cronin is an Advisor for Energy Community Policy at the Department of Energy where he contributes to interagency efforts to invest in coal, power plant, and oil and gas communities as the energy industry transforms. From 2020-2022 he served as a fellow at the Center for Energy and Sustainable Development at West Virginia University College of Law where he published West Virginia’s Energy Future and West Virginia’s Energy Future: Built Back Better.

Lauren Chiara Croxton – White House Council on Environmental Quality

Lauren Croxton is a Sustainability Policy and Program Analyst in the Office of the Federal Chief Sustainability Officer at the White House Council on Environmental Quality. Her work focuses on efforts to advance sustainability and climate resilient Federal operations. Under the Biden Administration, the Office of the CSO is leading execution of the President’s Executive Order 14057 Catalyzing Clean Energy Industries and Jobs Through Federal Sustainability.

Natasha DeJarnett – White House Council on Environmental Quality

Dr. Natasha DeJarnett (she/her) is the Deputy Director for Environmental Justice Data and Evaluation at the White House Council on Environmental Quality. Most recently, Dr. DeJarnett served as an assistant professor in the Christina Lee Brown Envirome Institute at the University of Louisville Division of Environmental Medicine researching the health impacts of extreme heat exposure and environmental health disparities.

Maya Duru – General Services Administration

Maya Duru is a Fellow with the Office of Evaluation Sciences in the U.S. General Services Administration, where she works on evaluating the equitable distribution of American Rescue Plan programs. Prior to her fellowship at OES, Maya was the Associate Director of Education at J-PAL where she directed the MITx MicroMasters program in Data, Economics, and Development Policy (DEDP) as well as the MIT Economics Department’s associated Master’s program. Maya holds a PhD in political science from UC San Diego.

Lisa Einstein – Cybersecurity and Infrastructure Security Agency

Lisa Einstein is an Impact Fellow, working to expand access to digital tools and mitigate harms from emerging technologies. She just completed an M.S. in computer science (artificial intelligence specialization) and M.A. in international policy (cyber policy and security specialization) from Stanford University. At Stanford she worked at the Stanford Internet Observatory, conducted AI and global computer science education research, and led LTG (ret.) H.R. McMaster’s research team on disruptive technologies and geopolitics.

Chloe Gibbs – Council of Economic Advisers

Chloe Gibbs is a Senior Economist on the President’s Council of Economic Advisers. Chloe is handling issues related to women in the workforce, care infrastructure, and child and family policy while at the Council. She is a labor economist who studies investments in children and education. Chloe completed her Ph.D. at the University of Chicago’s Harris School, and is a research affiliate of the Wilson Sheehan Lab for Economic Opportunities and Notre Dame’s Institute for Educational Initiatives.

Amanda Girard – Office of Evaluation Sciences

Amanda Girard is a Design Associate Fellow with the Office of Evaluation Sciences in the U.S. General Services Administration, where she embeds qualitative research approaches and processes into intervention design. Prior to her fellowship at OES, she was a Senior Designer at J-PAL and Boston Children’s Hospital’s Center for Young Women’s Health. Amanda is particularly interested in how designers can effectively collaborate with economists, researchers, and policymakers to help implement evidence-based programs and policies.

Marccus D. Hendricks, Ph.D. – White House Council on Environmental Quality

Dr. Marccus D. Hendricks is a Senior Advisor for Climate and Community Resilience at the White House Council on Environmental Quality. Prior to this appointment, Dr. Hendricks served as an Associate Professor of Urban Studies and Planning and the Director of the Stormwater Infrastructure Resilience and Justice (SIRJ) Lab at the University of Maryland. His areas of expertise include infrastructure, stormwater management, social vulnerability to disaster, environmental justice, and community science.

Jake Higdon – Department of Energy

Prior to FAS, as Manager for U.S. Climate Policy at Environmental Defense Fund, Jake led research and analysis on federal policies to ensure an equitable energy transition, spur clean manufacturing, and develop, demonstrate, and deploy climate-beneficial technologies. He has also been a Senior Advisor to think tank Data for Progress, conducted research at the Center on Global Energy Policy, and worked in data analytics. At the end of the Obama-Biden Administration, Jake served in the White House Office of Energy and Climate Change and U.S. Department of State.

Ann Hunter-Pirtle – Department of Energy

Ann Hunter-Pirtle is an Impact Fellow serving as a Strategic Communications Advisor to the Under Secretary for Science and Innovation at the U.S. Department of Energy. Previously, she served as the founding Executive Director of Stand For Schools, a nonprofit working to advance public education in her home state of Nebraska. She served as a speechwriter to then-EPA Administrator Gina McCarthy from 2014-2016 and as a specialist in land and water conservation policy at the White House Council on Environmental Quality beginning in 2011. Ann holds a BA in Political Science and French and a MS in Agricultural Economics from the University of Nebraska-Lincoln.

Michael Klein – Office of Educational Technology

Michael Klein is Digital Infrastructure in Education Impact Fellow at the Department of Education’s Office of Educational Technology where he serves as a subject matter expert on issues related to cybersecurity, data privacy, interoperability, and accessibility in P-12 and higher education. Michael comes to the role with 15 years of experience in K-12 education as a teacher, coach, consultant, and district leader.

Jenna Knobloch – Department of Agriculture

Jenna Knobloch is the Wildfire Resilience Impact Fellow doing a tour of service with the USDA office of Natural Resources and Environment. Jenna previously worked as Wildfire Program Manager at Sustainable Northwest. She has extensive experience planning landscape-scale forest restoration projects that support ecosystem health and community well-being in the age of wildfire, working to address system barriers to responsible use of fire as a land management tool through the Oregon Prescribed Fire Council.

Stephen Kostyo – Department of Education

Stephen Kostyo is an Impact Fellow at the Federation of American Scientists. He previously served as a Senior Policy Advisor at the Learning Policy Institute and Legislative Assistant for Congressman Tim Ryan from Ohio. He previously taught middle and high school math and science and has been an Adjunct Instructor at American University since 2019. Kostyo received a B.S. in Quantitative Economics and a B.A. in Political Science with honors at Miami University.

CJ Libassi – Department of Education

CJ Libassi is a Senior Advisor to the Under Secretary of the U.S. Department of Education, where he works on issues of higher education access, finance, and accountability. He is also a PhD student in economics and education at Teachers College, Columbia University, where he researches the same topics. Previously he worked in research and policy at the College Board, the Center for American Progress, and the University of Michigan’s Education Policy Initiative.

Keila Miles – Department of Education

Keila Miles is the Learning Impact Fellow at the Federation of American Scientists, where she works on education policy focused on learning acceleration and recovery with the Department of Education’s Institute of Education Sciences. Formally trained as a behavioral neuroscientist, she leverages her technical expertise to distill data for policy development and implementation guidance.Keila earned her B.S. in Biomedical Sciences from Oakwood University and Ph.D. in Interdisciplinary Neuroscience from the University of Cincinnati.

Bhavya Mohan – Office of Evaluation Sciences

Bhavya Mohan is a Fellow with the Office of Evaluation Sciences in the U.S. General Services Administration, where she currently works on projects that support the equitable delivery of the American Rescue Plan. Prior to her fellowship at OES, Bhavya was an Assistant Professor in the Marketing department at the University of San Francisco, where she researched the effects of transparency on consumer behavior. She received her doctorate in marketing, with a focus on consumer psychology, from Harvard Business School in 2016.

Tomás E. Monarrez – Department of Education

Tomás Monarrez is Senior Advisor to the Under Secretary of the U.S. Department of Education. He is trained as a labor economist with expertise in the economics of education and applied econometrics. His work studies the impact of public policies on inequality in socioeconomic outcomes in the US. Monarrez earned his doctoral degree in economics from the University of California, Berkeley.

katy newhouse

Katy Newhouse – White House Council on Environmental Quality

Katy Newhouse serves as the Director for Sustainable Operations, Supply Chain within the White House’s Council on Environmental Quality’s Office of the Chief Sustainability Officer. Previously, she worked in product management at Amazon, developing strategies to decarbonize aviation, trucking, intermodal rail, and warehouse facilities. Katy will work on increasing the sustainability of Federal supply chains and achieving net-zero emissions from Federal procurement by 2050.

Rachel Pierson – Department of Energy

Rachel Pierson has a decade of experience at the intersection of climate, policy, and markets, most recently supporting incubators and economic development projects for the New York State Energy Research and Development Authority (NYSERDA) Innovation team. Previously, she was the Managing Director and Head of Research at Beacon Policy Advisors, where she stood up the energy/environmental policy research portfolio and led research on technology and trade policy issues.

Yenda Prado, Ph.D. – Department of Education 

Dr. Prado is the Emerging Tech in Education Impact Fellow at the Federation of American Scientists,  where she works on national education policy, identifying and investigating emerging educational  trends and technologies for the Office of Educational Technology within the Department of  Education. Dr. Prado has expertise in emerging educational technologies, inclusive education, and  digital learning through media. She holds a Ph.D. in  Education from the University of California, Irvine, an Ed.M. in Education from Harvard University,  and a B.A. in Psychology from Stanford University.

Allison Rogers – White House Council on Environmental Quality

Allison Rogers serves as the Deputy Director for the Justice40 Initiative at CEQ. She is deeply committed to promoting environmental justice and climate solutions. Alli previously served as the Climate Policy Advisor for the Aspen Tech Policy Hub, Director of Policy for the Rhode Island Department of Administration, Executive Director for the Green the Capitol Office within the U.S. House of Representatives, and a University Management Fellow with the Harvard Green Campus Initiative.

Uzaib Saya – Office of Evaluation Sciences

Uzaib Saya is an Assistant Policy Researcher at the RAND Corporation and is finishing up his doctoral dissertation at the Pardee RAND Graduate School. His research uses tools from microeconomics and public health to evaluate the impact of health interventions and health investments in low and middle-income countries and generate evidence for stakeholders such as donor agencies and governments.

Maura Shenker – Small Business Administration

Maura Shenker is an Economic Impact and Innovation Fellow within the Small Business Administration where she is focusing on encouraging the involvement of underserved communities in SBA’s ecosystem. Prior to her fellowship, Maura was the Director of the Small Business Development Center at Temple University, where she is currently completing her Ph.D. in Political Science. Her research examines the institutional barriers that discourage both political and economic participation in marginalized urban communities.

Michael Sinkinson – Council of Economic Advisers

Michael Sinkinson is an Associate Professor of Economics at the Yale School of Management and is currently serving as a Senior Economist on the Council of Economic Advisers. Michael’s focus at the Council is on competition policy and regulation more broadly. Michael is an Industrial Organization economist with a specialty in antitrust and has published research in the American Economic Review and other top journals. He completed his PhD at Harvard and previously served on the faculty at Wharton.

Kevin Stange – Department of Education

Kevin Stange is Senior Advisor to the Under Secretary of the U.S. Department of Education. He is on leave from the University of Michigan, where he is an Associate Professor of Public Policy and teaches courses in quantitative methods, economics, and education policy. His research investigates the role of education and labor market policies in creating economic opportunities and narrowing inequality, spanning both K12 and postsecondary education.

Naomi Stern – Department of Education

Naomi serves as the Environmental Sustainability and Infrastructure Impact Fellow within the Department of Education’s Office of Communications. Naomi comes to this role with over eight years of experience managing environmental education programs and working directly with school districts to accelerate sustainable infrastructure projects that improve student health and safety.

Heather Tallis – Office of Science and Technology Policy

Heather Tallis is the Assistant Director for Conservation and Biodiversity Sciences and the Acting Director of the National Nature Assessment in the White House Office of Science and Technology Policy. She has deep experience advancing science and policy that bridges nature, the economy and health. She provides evidence-based input to the Biden-Harris Administration’s America the Beautiful effort, leads cross agency action on nature-based solutions, and with the US Global Change Research Program, established the National Nature Assessment.

Elizabeth Texeira – Department of Education

Elizabeth Texeira recently served as the Director of the Office of College and Career Readiness at the Rhode Island Department of Education. Previously, she served at the RI Office of the Postsecondary Commissioner, the University of California, and a variety of nonprofit organizations, including founding her own – Girls Thinking Global.

Katarina Watney – Department of Health and Human Services

Katarina Watney is an Impact Fellow at the Federation of American Scientists where she works on biosecurity policy. Katarina previously worked as government contractor where she designed, implemented, and oversaw biosecurity and nuclear threat reduction activities for the Department of Defense, Department of State, and other international funders. She earned her Masters in Public Health from the University of Virginia.

John Whitmer, Ed.D. – Department of Education

John previously served as the Senior Director for Data Science and Analytics for ACT, Inc.  In this role, he leads a team of data scientists, psychometricians, and learning analytics researchers to conduct foundational research and to develop operational algorithms. Prior to joining ACT, John lead a team conducting learning analytics research and development for Blackboard. John holds a Doctorate in Educational Leadership from UC Davis and a Master’s Degree in Sociocultural Anthropology from UC Davis.

Candace Young – Department of Energy

As an Energy Innovation Impact Fellow, Candace Young leverages her technical and policy expertise and program management skills to advance key priorities within the Biden-Harris Administration’s clean energy agenda. Her work in the new Department of Energy (DOE) Office of Clean Energy Demonstrations (OCED) helps to accelerate the maturation and market adoption of later-stage clean energy technologies and s systems through the implementation and management of commercial-scale public/private demonstrations.

In Residence

Shannon McGovern

Shannon McGovern serves as the Wildfire Resiliency Impact Fellow for the Office of Wildland Fire. Shannon is a wildfire researcher, focusing on translating science to practice through federal policy. She promotes the use of data for improving landscape-scale planning and outcome-based performance metrics.

Stephanie Melville

Stephanie Melville serves as a Data Science Education Impact Fellow within the Department of Education’s Institute of Education Sciences, where she provides an innovative lens to professional learning and advocates for policy and best practices for Data Science Education in the K-12 sector.

Robert Putt

Robert Putt is an Impact Fellow at FAS. Formerly, Executive Director of the Kentucky Office of Health Data and Analytics he oversaw the health insurance marketplace, health information exchange, healthcare and human services analytics, privacy program, and telehealth services.

Jess Rogers 

Jess Rogers is an Impact Fellow at the Federation of American Scientists, where she works on nonproliferation law and policy. As a treaty lawyer and policy analyst, she focuses on countering the threats of nuclear, chemical, and biological weapons through the promotion of international norms.

Sonia Wang

Sonia Wang is a Policy Advisor for Wildfire and Nature-Based Solutions at the White House Office of Management and Budget. Sonia works on promoting the sustainable management and use of natural features and processes to tackle existing and emerging environmental challenges. She recently earned her Masters of Environmental Management from Yale University.

Ken Williams

Ken Williams is an equity strategist experienced in economic development, legislative research, and civic engagement. He has launched initiatives for city and local government, facilitated national learning dialogues that foster diversity, equity, and inclusion, advised higher education institutions on community engagement, and strengthened the organizational capacity of nonprofit organizations.

Jane Yang

Jane Yang is an Impact Fellow committed to improving outcomes for children and families through the strategic and responsible use of data. An engineer without borders and jane-of-all-trades, she has worked in humanitarian crisis response, energy & infrastructure investments, transformative agriculture, community development financing, and tech designed to help teams do their best work


Impact Fellowship alumni who have completed their tours of service continue on to a number of opportunities at the conclusion of their fellowship, including returning to the private sector, academia, or in permanent roles within the federal government.

FAS regularly engages Impact Fellowship alumni, including inviting alumni to brown bag talks, hosting networking events to connect with current Impact Fellows, and asking our alumni to serve as ambassadors for the program.