Chief Scientist and SVP
Environmental Defense Fund
Steven ensures the scientific integrity of EDF’s positions and programs, and facilitates collaborations with researchers from a diversity of institutions and countries. He also helps identify emerging science relevant to EDF’s mission. Steven plays a leading role in EDF’s research efforts, including work on quantifying methane emissions from the natural gas supply chain and the use of emerging sensor technologies in improving our understanding of air pollution and related impacts on human health. He has been actively involved in biogeochemistry, forest ecology and climate change impacts research for more than 35 years, and has published more than 100 scientific papers.