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Sarah E. Light

Professor Light’s research examines issues at the intersection of environmental law and business innovation. Her articles have addressed the regulatory implications of the rise of transportation platforms like Uber and Lyft; how business innovation, such as Microsoft’s adoption of a private carbon fee, can be a form of private environmental governance; and the U.S. military’s role in stimulating private technological innovation to reduce fossil fuel use in what Light has called The Military-Environmental Complex. Her articles have appeared in and are forthcoming in the Duke Law Journal, the UCLA Law Review, the Vanderbilt Law Review, the Emory Law Journal and the Stanford Environmental Law Journal, among others.

In 2017, Professor Light was awarded the Excellence in Teaching Award in the MBA Program at Wharton. In 2016, Professor Light was one of ten faculty nominated by the MBA student body for the Helen Kardon Moss Anvil Award for Outstanding MBA Teaching.

Research Interests

  • environmental law and policy
  • private environmental governance
  • legislation and statutory interpretation
  • the regulatory state

Issue Briefs

  • October 2015 Not the Only Game in Town

    This Brief focuses on ways in which private firms are adopting tools that mirror public law instruments—such as internal carbon fees (similar to a public carbon tax) and private cap-and-trade schemes (like public emissions trading schemes)—to reduce greenhouse gas emissions and address climate change. These private case studies suggest that significant progress in reducing emissions can come from embedding emissions reduction programs into core business strategy. Moreover, these case studies indicate that climate change, as a global issue, requires public regulators to recognize the potential contributions of global multinational firms.

  • December 2013 The Military-Environmental Complex
    Although the military’s operations are largely exempt from environmental laws and regulations when those laws conflict with its national security mission, the military has important incentives to reduce its reliance on fossil fuels and combat climate change. If nurtured properly, the military’s extensive undertaking to improve its sustainable energy use and reduce demand for fossil-fuel-derived energy has the potential to become one important tool in the environmental regulatory toolkit.

"B-School for Public Policy" Seminars

June 15
Policy Disruption: Regulatory Responses to Business and Technological Innovation
New forms of business in the sharing economy, and new technologies like autonomous vehicles, have the potential to “disrupt” existing regulatory structures. This seminar examined the challenges facing regulators and legislators, who must respond so as to both (a) promote innovation and (b) protect the public interest.

Other Policy Related Activities

United States’s Attorney’s, Southern District of New York

Chief, Environmental Protection Unit, Civil Division 2007-2011

Assistant United States Attorney, Civil Division 2001-2011

 

United States Court of Appeals for the Second Circuit

Law Clerk to the Honorable John M. Walker, Jr. 2000-2001

 

Peer Review: Alfred P. Sloan Foundation, Alliance for Research on Corporate Sustainability, American Business Law Journal, Ethics & International Affairs, Journal of Business Ethics, International Journal, Regulation & Governance

 

Pro Bono Mediator, United States District Court for the Southern District of New York (2011-13), New York Peace Institute, Brooklyn Civil Court (2012-13)

Featured Content

In this interview on Wharton Business Radio on SiriusXM channel 111, Professor Sarah Light talks about how mainstream businesses are advancing sustainability, where her research suggests we’re headed, and what the best tactics look to be for bringing private enterprise and national governments together to stave off a climate crisis.

PENN WHARTON PPI
RESOURCE SPOTLIGHT:

  • <h3>NOAA National Climatic Data Center</h3><p><img width="200" height="198" alt="" src="/live/image/gid/4/width/200/height/198/483_noaa_logo.rev.1407788692.jpg" class="lw_image lw_image483 lw_align_left" srcset="/live/image/scale/2x/gid/4/width/200/height/198/483_noaa_logo.rev.1407788692.jpg 2x, /live/image/scale/3x/gid/4/width/200/height/198/483_noaa_logo.rev.1407788692.jpg 3x" data-max-w="954" data-max-h="945"/>NOAA’s National Climatic Data Center (NCDC) is responsible for preserving, monitoring, assessing, and providing public access to the Nation’s treasure of <strong>climate and historical weather data and information</strong>.</p><p> Quick link to home page: <a href="http://www.ncdc.noaa.gov/" target="_blank">http://www.ncdc.noaa.gov/</a></p><p> Quick link to NCDC’s climate and weather datasets, products, and various web pages and resources: <a href="http://www.ncdc.noaa.gov/data-access/quick-links" target="_blank">http://www.ncdc.noaa.gov/data-access/quick-links</a></p><p> Quick link to Text & Map Search: <a href="http://www.ncdc.noaa.gov/cdo-web/" target="_blank">http://www.ncdc.noaa.gov/cdo-web/</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>Congressional Budget Office</h3><p><img width="180" height="180" alt="" src="/live/image/gid/4/width/180/height/180/380_cbo-logo.rev.1406822035.jpg" class="lw_image lw_image380 lw_align_right" data-max-w="180" data-max-h="180"/>Since its founding in 1974, the Congressional Budget Office (CBO) has produced independent analyses of budgetary and economic issues to support the Congressional budget process.</p><p> The agency is strictly nonpartisan and conducts objective, impartial analysis, which is evident in each of the dozens of reports and hundreds of cost estimates that its economists and policy analysts produce each year. CBO does not make policy recommendations, and each report and cost estimate discloses the agency’s assumptions and methodologies. <strong>CBO provides budgetary and economic information in a variety of ways and at various points in the legislative process.</strong> Products include baseline budget projections and economic forecasts, analysis of the President’s budget, cost estimates, analysis of federal mandates, working papers, and more.</p><p> Quick link to Products page: <a href="http://www.cbo.gov/about/our-products" target="_blank">http://www.cbo.gov/about/our-products</a></p><p> Quick link to Topics: <a href="http://www.cbo.gov/topics" target="_blank">http://www.cbo.gov/topics</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>National Bureau of Economic Research (Public Use Data Archive)</h3><p><img width="180" height="43" alt="" src="/live/image/gid/4/width/180/height/43/478_nber.rev.1407530465.jpg" class="lw_image lw_image478 lw_align_right" data-max-w="329" data-max-h="79"/>Founded in 1920, the <strong>National Bureau of Economic Research</strong> is a private, nonprofit, nonpartisan research organization dedicated to promoting a greater understanding of how the economy works. The NBER is committed to undertaking and disseminating unbiased economic research among public policymakers, business professionals, and the academic community.</p><p> Quick Link to <strong>Public Use Data Archive</strong>: <a href="http://www.nber.org/data/" target="_blank">http://www.nber.org/data/</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>Federal Aviation Administration: Accident & Incident Data</h3><p><img width="100" height="100" alt="" src="/live/image/gid/4/width/100/height/100/80_faa-logo.rev.1402681347.jpg" class="lw_image lw_image80 lw_align_left" srcset="/live/image/scale/2x/gid/4/width/100/height/100/80_faa-logo.rev.1402681347.jpg 2x, /live/image/scale/3x/gid/4/width/100/height/100/80_faa-logo.rev.1402681347.jpg 3x" data-max-w="550" data-max-h="550"/>The NTSB issues an accident report following each investigation. These reports are available online for reports issued since 1996, with older reports coming online soon. The reports listing is sortable by the event date, report date, city, and state.</p><p> Quick link: <a href="http://www.faa.gov/data_research/accident_incident/" target="_blank">http://www.faa.gov/data_research/accident_incident/</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>The World Bank Data (U.S.)</h3><p><img width="130" height="118" alt="" src="/live/image/gid/4/width/130/height/118/484_world-bank-logo.rev.1407788945.jpg" class="lw_image lw_image484 lw_align_left" srcset="/live/image/scale/2x/gid/4/width/130/height/118/484_world-bank-logo.rev.1407788945.jpg 2x, /live/image/scale/3x/gid/4/width/130/height/118/484_world-bank-logo.rev.1407788945.jpg 3x" data-max-w="1406" data-max-h="1275"/>The <strong>World Bank</strong> provides World Development Indicators, Surveys, and data on Finances and Climate Change.</p><p> Quick link: <a href="http://data.worldbank.org/country/united-states" target="_blank">http://data.worldbank.org/country/united-states</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>HUD State of the Cities Data Systems</h3><p><strong><img width="200" height="200" alt="" src="/live/image/gid/4/width/200/height/200/482_hud_logo.rev.1407788472.jpg" class="lw_image lw_image482 lw_align_left" srcset="/live/image/scale/2x/gid/4/width/200/height/200/482_hud_logo.rev.1407788472.jpg 2x, /live/image/scale/3x/gid/4/width/200/height/200/482_hud_logo.rev.1407788472.jpg 3x" data-max-w="612" data-max-h="613"/>The SOCDS provides data for individual Metropolitan Areas, Central Cities, and Suburbs.</strong> It is a portal for non-national data made available through a number of outside institutions (e.g. Census, BLS, FBI and others).</p><p> Quick link: <a href="http://www.huduser.org/portal/datasets/socds.html" target="_blank">http://www.huduser.org/portal/datasets/socds.html</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>The Penn World Table</h3><p> The Penn World Table provides purchasing power parity and national income accounts converted to international prices for 189 countries/territories for some or all of the years 1950-2010.</p><p><a href="https://pwt.sas.upenn.edu/php_site/pwt71/pwt71_form.php" target="_blank">Quick link.</a> </p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>Internal Revenue Service: Tax Statistics</h3><p><img width="155" height="200" alt="" src="/live/image/gid/4/width/155/height/200/486_irs_logo.rev.1407789424.jpg" class="lw_image lw_image486 lw_align_left" srcset="/live/image/scale/2x/gid/4/width/155/height/200/486_irs_logo.rev.1407789424.jpg 2x" data-max-w="463" data-max-h="596"/>Find statistics on business tax, individual tax, charitable and exempt organizations, IRS operations and budget, and income (SOI), as well as statistics by form, products, publications, papers, and other IRS data.</p><p> Quick link to <strong>Tax Statistics, where you will find a wide range of tables, articles, and data</strong> that describe and measure elements of the U.S. tax system: <a href="http://www.irs.gov/uac/Tax-Stats-2" target="_blank">http://www.irs.gov/uac/Tax-Stats-2</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>USDA Nutrition Assistance Data</h3><p><img width="180" height="124" alt="" src="/live/image/gid/4/width/180/height/124/485_usda_logo.rev.1407789238.jpg" class="lw_image lw_image485 lw_align_right" srcset="/live/image/scale/2x/gid/4/width/180/height/124/485_usda_logo.rev.1407789238.jpg 2x, /live/image/scale/3x/gid/4/width/180/height/124/485_usda_logo.rev.1407789238.jpg 3x" data-max-w="1233" data-max-h="850"/>Data and research regarding the following <strong>USDA Nutrition Assistance</strong> programs are available through this site:</p><ul><li>Supplemental Nutrition Assistance Program (SNAP) </li><li>Food Distribution Programs </li><li>School Meals </li><li>Women, Infants and Children </li></ul><p> Quick link: <a href="http://www.fns.usda.gov/data-and-statistics" target="_blank">http://www.fns.usda.gov/data-and-statistics</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>National Center for Education Statistics</h3><p><strong><img width="400" height="80" alt="" src="/live/image/gid/4/width/400/height/80/479_nces.rev.1407787656.jpg" class="lw_image lw_image479 lw_align_right" data-max-w="400" data-max-h="80"/>The National Center for Education Statistics (NCES) is the primary federal entity for collecting and analyzing data related to education in the U.S. and other nations.</strong> NCES is located within the U.S. Department of Education and the Institute of Education Sciences. NCES has an extensive Statistical Standards Program that consults and advises on methodological and statistical aspects involved in the design, collection, and analysis of data collections in the Center. To learn more about the NCES, <a href="http://nces.ed.gov/about/" target="_blank">click here</a>.</p><p> Quick link to NCES Data Tools: <a href="http://nces.ed.gov/datatools/index.asp?DataToolSectionID=4" target="_blank">http://nces.ed.gov/datatools/index.asp?DataToolSectionID=4</a></p><p> Quick link to Quick Tables and Figures: <a href="http://nces.ed.gov/quicktables/" target="_blank">http://nces.ed.gov/quicktables/</a></p><p> Quick link to NCES Fast Facts (Note: The primary purpose of the Fast Facts website is to provide users with concise information on a range of educational issues, from early childhood to adult learning.): <a href="http://nces.ed.gov/fastfacts/" target="_blank">http://nces.ed.gov/fastfacts/#</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>MapStats</h3><p> A feature of FedStats, MapStats allows users to search for <strong>state, county, city, congressional district, or Federal judicial district data</strong> (demographic, economic, and geographic).</p><p> Quick link: <a href="http://www.fedstats.gov/mapstats/" target="_blank">http://www.fedstats.gov/mapstats/</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>
  • <h3>Federal Reserve Economic Data (FRED®)</h3><p><strong><img width="180" height="79" alt="" src="/live/image/gid/4/width/180/height/79/481_fred-logo.rev.1407788243.jpg" class="lw_image lw_image481 lw_align_right" data-max-w="222" data-max-h="97"/>An online database consisting of more than 72,000 economic data time series from 54 national, international, public, and private sources.</strong> FRED®, created and maintained by Research Department at the Federal Reserve Bank of St. Louis, goes far beyond simply providing data: It combines data with a powerful mix of tools that help the user understand, interact with, display, and disseminate the data.</p><p> Quick link to data page: <a href="http://research.stlouisfed.org/fred2/tags/series" target="_blank">http://research.stlouisfed.org/fred2/tags/series</a></p><p>See all <a href="/data-resources/">data and resources</a> »</p>