Our Team

Lauren works with a diverse group of internal and external stakeholders to orchestrate and lead a complex, multi-pronged campaign to champion the capabilities of MethaneSAT – a high performance, purpose-built satellite to map and measure oil and gas methane emissions worldwide. She works to ensure the data MethaneSAT produced while operational can be used within government, industry, academia, the financial community and civil society to monitor, measure, and reduce oil and gas methane pollution to meet our 75% emissions reduction goal. Lauren also leads the EDF Rapid Response Room, a team of science, outreach and communications staff to review data and associated analysis as they are produced.

Andrew works with a variety of stakeholders within the oil and gas industry and the financial sector to drive continuous improvement in methane emission management and disclosure. His engagements with industry and investors also address additional near-term challenges and opportunities pertaining to oil and gas industry during the energy transition – including joint venture governance, mergers and acquisitions, and hydrogen development.

Yalun (Aaron) Feng is a Senior Manager, Energy Transition at the Environmental Defense Fund, where he leads global initiatives that leverage high-quality environmental data and satellite-based insights, such as MethaneSAT, to drive real-world emissions reductions in the oil and gas sector. His work sits at the intersection of industry engagement and capital markets, partnering with national oil companies, investors, and regulators to translate measurement-based performance into actionable finance and risk strategies. A core focus of his role is advancing investable methane finance through sustainability-linked instruments and results-based mechanisms that accelerate the path to net zero. Aaron holds a Master of Environmental Management from Yale University and a Bachelor’s degree from Vanderbilt University.

Jon leads EDF’s efforts working with partners in government, industry and civil society to reduce methane emissions from the oil and gas industry across North America. He has led successful campaigns to craft and strengthen methane policies at the state and federal levels in the U.S., Canada and Mexico. His advocacy efforts have included testimony before congressional and legislative committees on the need to reduce oil and gas methane waste and pollution as well as serving as EDF’s lead on the National Petroleum Council’s 2024 study on greenhouse gas emissions from the natural gas sector.

Dan Grossman is the Vice President - Global Energy Transition and is based in Colorado. His work focuses on global methane emissions from the oil and gas sector. Dan joined the organization in May of 2006, after serving ten years in the Colorado General Assembly. He served six years in the Colorado House of Representatives, including two years as House Minority Leader, the youngest person in Colorado history to serve in that capacity. Dan also served four years in the Colorado Senate, where he was the Chairman of the Judiciary Committee and Vice Chairman of the Senate Agriculture, Natural Resources and Energy Committee. During his service in the legislature, Dan practiced law focusing on commercial litigation and labor and employment law. Dan received his bachelors degree in Political Science from the University of Kansas and his law degree from the University of Denver.

Léa (she/her) is an EU energy and climate policy expert driven by the need to solve climate change, by championing better EU policy decisions. She brings both advocacy and analyst expertise combined with years of research experience having earned a Ph.D. on EU-China sustainable energy relations. In her role as senior EU policy manager for EU energy transition, Léa is leading on advocacy to help move forward progressive EU methane and hydrogen policy, also considering the international dimension. Previously she worked at the Brussels-based think tank E3G on European Green Deal diplomacy. Léa speaks French, German and English.

Hanling Yang is an Associate Vice President of Energy Transition at EDF. She is responsible for developing and overseeing the implementation of EDF’s strategies and campaigns in key countries in the Asia-Pacific region to facilitate an equitable transition away from fossil fuel dependence, with a focus on halting the rise of fossil fuel emissions on a path consistent with a 2050 zero-carbon future. In this role, she works closely with a wide range of stakeholders—including governments, industry leaders, and civil society—and leverages MethaneSAT data to inform effective policy design and implementation, helping to accelerate methane mitigation efforts across the Asia-Pacific region.

Before joining EDF, Hanling was an Associate Director of the U.S – Asia Partnerships for Environmental Law at Vermont Law School, working collaboratively with government institutions, research institutes and legal professionals to advance environmental governance. Hanling also worked at the International Sustainable Development Foundation in Portland Oregon managing a decade-long sustainable land use and urban planning training program and green community projects.