Stanford Doerr School of Sustainability
Showing 21-30 of 84 Results
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David J Hayes
Professor of the Practice, Environmental Social Sciences
BioDavid J. Hayes is a Professor of Practice at the Stanford Doerr School of Sustainability and affiliated faculty at Stanford Law School. He specializes in energy, environmental, and natural resources law and policy. Hayes served in the White House as Special Assistant to President Biden for Climate Policy and was the Senate-confirmed Deputy Secretary and Chief Operating Officer at the U.S. Department of the Interior for Presidents Barack Obama and Bill Clinton. In addition to his public service, Hayes was Executive Director of the State Energy & Environmental Impact Center at the NYU School of Law, where he worked with state attorneys general on climate, environment and clean energy initiatives; Chairman of the Board of the Environmental Law Institute; and partner and Global Chair of the Environment, Land and Resources Department at Latham & Watkins. Hayes is a graduate of the University of Notre Dame and Stanford Law School.
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Elliott L Hazen
Adjunct Professor, Oceans
BioI received my master's of science in the Spring of 2003 from the University of Washington School of Aquatic and Fishery Sciences and my PhD from Duke University in 2008. Currently, I am working at NOAA's Southwest Fisheries Science Center in Monterey, CA. My research interests span oceanography, fisheries ecology to climate change modeling, specifically examining species-habitat relationships in the ocean, predator-prey dynamics, and climate projections on marine top predator biodiversity. My publications have addressed a range of topics from fine-scale foraging ecology of top predators, dynamic ocean management of protected species, to modeling the effects of climate change on top predator habitat and biodiversity.
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Siegfried Hecker
Professor (Research) of Management Science and Engineering and Senior Fellow at the Freeman Spogli Institute for International Studies, Emeritus
Current Research and Scholarly Interestsplutonium science; nuclear weapons stockpile stewardship; cooperative threat reduction
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Alex Hedgpeth
Postdoctoral Scholar, Earth System Science
BioAlexandra Hedgpeth is a biogeochemist whose research explores how soil carbon cycling in peatlands responds to environmental change. Her work focuses on understanding the mechanisms that regulate carbon storage and greenhouse gas production in both tropical and boreal wetlands, with a particular emphasis on the vulnerability of deep, ancient carbon to modern surface inputs and hydrologic shifts.
Through her Ph.D. research at the University of California, Los Angeles, Alex has developed and applied novel isotopic and geochemical approaches—including implementing radiocarbon dating, stable isotope analyses, and high-resolution molecular characterization—to trace the sources and fates of carbon in peat soils. Her fieldwork spans a range of ecosystems, from ombrotrophic bogs in the Arctic to saturated tropical peat domes in Central America. This comparative framework allows her to identify unifying controls on carbon preservation and loss across climate zones.
Alex's research integrates field measurements, laboratory experiments, and synthesis of global datasets. She is a key contributor to multi-institutional efforts to model peatland carbon cycling under climate change scenarios, including DOE- and NSF-supported initiatives. Her work helps clarify the role of peatlands as both long-term carbon sinks and potential sources of atmospheric CO₂ and CH₄ under future disturbance.
In addition to her scientific contributions, Alex is committed to collaborative, interdisciplinary research and has worked closely with partners at national laboratories, the Smithsonian Tropical Research Institute, and international data synthesis networks. She is especially interested in questions with high uncertainty and high relevance to climate feedbacks—such as thresholds in biogeochemical function and the persistence of deep soil carbon under hydrologic change. -
Sebastian Heilpern
Assistant Professor of Earth System Science
BioSebastian is an ecologist and sustainability scientist studying the causes of biodiversity change and its consequences for ecosystems and human well-being, with a particular emphasis on aquatic ecosystems. In linking causes to consequences, his research also seeks to identify opportunities to align biodiversity conservation with societal objectives around public health, food systems, and renewable energy. His research integrates field work, data science and synthesis, and spans scales from local and regional studies in tropical river basins such as the Amazon to global analyses. Prior to joining Stanford, he was an Eric & Wendy Schmidt AI in Science Postdoctoral Fellow at Cornell University.
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Sarah Heilshorn
Rickey/Nielsen Professor in the School of Engineering and Professor, by courtesy, of Bioengineering and of Chemical Engineering
Current Research and Scholarly InterestsProtein engineering
Tissue engineering
Regenerative medicine
Biomaterials
