Stanford University
Showing 501-550 of 1,465 Results
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Martin Grove
Professor (Research) of Earth and Planetary Sciences
Current Research and Scholarly InterestsResearch
I study the evolution of the Earth's crust by undertaking petrologic and geochemically-based research that is grounded with fieldwork. I co-direct the Stanford-USGS ion probe laboratory and develop geochronologic methods to constrain crystallization, metamorphic, and metasomatic histories of the middle to deep crust. Similarly, because heat flow characteristically attends mass transfer during crustal deformation, I employ 40Ar/39Ar and (U-Th)/He thermochronology to extract thermal history information from minerals to constrain the timing and magnitude of fault slip as well as erosional and tectonic denudation. Finally, I am heavily involved in provenance studies to constrain aspects of crustal deformation and erosion that are only preserved in the sedimentary record. -
Halldora Gudmundsdottir
Ph.D. Student in Energy Resources Engineering, admitted Autumn 2014
Current Research and Scholarly InterestsMy PhD research focuses on developing predictive models for geothermal systems. I am interested in direct predictions of the future performance of geothermal reservoirs as well as characterization of the subsurface flow behavior that can aid in operational decision making. Currently, I am incorporating principles from statistics and artificial intelligence into workflows that can be used for production and injection optimization.
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Leonidas Guibas
Paul Pigott Professor of Engineering and Professor, by courtesy, of Electrical Engineering
Current Research and Scholarly InterestsGeometric and topological data analysis and machine learning. Algorithms for the joint analysis of collections of images, 3D models, or trajectories. 3D reconstruction.
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Gemma Guilera Ferre
Managing Director, Sustainability Accelerator
BioDr. Gemma Guilera is a chemist, an entrepreneur and an enabler of innovation. She currently serves as a Managing Director at the Sustainability Accelerator within the Stanford Doerr School of Sustainability.
Prior to joining the Accelerator, Guilera was Senior Manager at Plug and Play tech Center, an innovation platform and early-stage startup investment firm in Silicon Valley. Specializing in sustainable materials and packaging, she facilitated relationships between corporations seeking innovative solutions and the dynamic startup network at Plug and Play. Earlier to this role, Guilera was co-founder and CEO of Moving Beans, a venture backed-up sustainable startup developing more environmentally friendly, home-compostable materials for consumer goods.
During her time in the UK, Guilera was part of the original team that implemented the human-centered, solution-led Accelerator for Cities at Connected Places Catapult, where she led the startup team. The team provided support to startups in their growth journey through strategic multi-stakeholder engagement and accelerator programs. She also developed and led the open call for one of the largest large-scale IoT demonstrators globally, now the EU standard for innovative open calls.
Prior to her work in innovation, Guilera built the X-Ray Absorption Spectroscopy Beamline at ALBA Synchrotron (Spain), overseeing its construction and operation and conducting research in various areas such as catalysis and nanomaterials. Her career began as an industrial post-doc, followed by her role as a scientist at the ESRF (European Synchrotron Radiation Facility), where she worked in the field of heterogeneous catalysis and collaborated with Toyota to co-develop a three-way catalyst for petrol cars.
Gemma holds a BSc in Chemistry from the University of Barcelona, as well as an MSc in Supramolecular Chemistry and a PhD in Organometallic Chemistry from King’s College London. She was selected as one of the finalists in Women in Tech Global Awards 2021. -
Tianyang Guo (郭天阳)
Postdoctoral Scholar, Geological Sciences
BioDr. Tianyang Guo earned his Ph.D. degree in Rock Mechanics from the Department of Earth Sciences, the University of Hong Kong in 2020. He earned his bachelor's and master’s degree from Wuhan University (WHU) in 2013 and 2016, respectively. He was awarded the National Scholarship for Graduate in 2015 and graduated from WHU as an outstanding graduate. Before joining Stanford, he was a Postdoctoral Fellow in the Department of Civil and Environmental Engineering at the Hong Kong Polytechnic University (PolyU) under PolyU Distinguished Postdoctoral Fellowship Scheme 2021.
His research interests include (1) Cracking mechanisms and induced microseismicity during the injection of CO2 into reservoir rocks. (2) Application of machine learning in acoustic emission (AE) data interpretation. (3) Microcracking mechanisms of granite based on AE and microscopic observation. -
Emily Gwynn
Program Coordinator, Energy Science & Engineering
Current Role at StanfordProgram Coordinator, Energy Science & Engineering, Doerr School of Sustainability
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Elizabeth Hadly
Paul S. and Billie Achilles Professor of Environmental Biology and Professor of Earth System Science, Emerita
Current Research and Scholarly InterestsElizabeth Hadly and her lab probe how perturbations such as climatic change and human modification of the environment influence the evolution and ecology of animals.
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Sydney Aleah Hampton
Ph.D. Student in Oceans, admitted Autumn 2023
Master of Public Policy Student, Public PolicyBioSydney is a PhD student in the Oceans department, interested in using an interdisciplinary approach to explore the biophysical interactions of marine migratory species with their environment, and their responses to ecological and anthropogenic stressors. She is particularly interested in using what we know about various environmental variables and large-scale climate events to further predict and understand changes to the migratory patterns of marine species. Sydney holds a BS in Marine Science and BS in Experimental Psychology from the University of South Carolina.
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Ronald Hanson
Clarence J. and Patricia R. Woodard Professor of Mechanical Engineering
Current Research and Scholarly InterestsProfessor Hanson has been an international leader in the development of laser-based diagnostic methods for combustion and propulsion, and in the development of modern shock tube methods for accurate determination of chemical reaction rate parameters needed for modeling combustion and propulsion systems. He and his students have made several pioneering contributions that have impacted the pace of propulsion research and development worldwide.
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James Harris
James and Elenor Chesebrough Professor in the School of Engineering, Emeritus
Current Research and Scholarly InterestsResearch interests have been in the areas of new electronic and optoelectronic device structures created by heterojunctions, quantum wells, superlattices and nanostructured materials. Molecular Beam Epitaxy (MBE) has been the foundation to prepare nanostructured metastable materials with atomic layer control and dimensions smaller than the wavelength of electrons. In this regime, quantum size effects can be utilized to create entirely new device structures based upon tailored transitions between quantum states and tunneling between states and structures. Past two decades focused on MBE growth of novel optoelectronic materials (GaInNAsSb) for long wavelength lasers and solar cells; quantum well structures for surface emitting lasers with power and bandwidth demands of AI now driving 10,000 element VCSEL arrays for optical interconnect; integrated nanophotonic structures for laser driven dielectric electron accelerators and free electron lasers (FEL) on a wafer for medical imagining systems; high speed optical modulators and non-linear optical effects for generation, control and application of ultra-short optical pulses; ultra-high efficiency multi-bandgap solar cells; world record solar to hydrogen conversion with water splitting; Si based photonic devices, including single photon avalanche detector (SPAD) for range finding and autonomous vehicles; implantable retina prosthesis with first human response in phase 1 human trials, 12/17.
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Jerry Harris
The Cecil H. and Ida M. Green Professor in Geophysics, Emeritus
Current Research and Scholarly InterestsBiographical Information
Jerry M. Harris is the Cecil and Ida Green Professor of Geophysics and Associate Dean for the Office of Multicultural Affairs. He joined Stanford in 1988 following 11 years in private industry. He served five years as Geophysics department chair, was the Founding Director of the Stanford Center for Computational Earth and Environmental Science (CEES), and co-launched Stanford's Global Climate and Energy Project (GCEP). Graduates from Jerry's research group, the Stanford Wave Physics Lab, work in private industry, government labs, and universities.
Research
My research interests address the physics and dynamics of seismic and electromagnetic waves in complex media. My approach to these problems includes theory, numerical simulation, laboratory methods, and the analysis of field data. My group, collectively known as the Stanford Wave Physics Laboratory, specializes on high frequency borehole methods and low frequency labratory methods. We apply this research to the characterization and monitoring of petroleum and CO2 storage reservoirs.
Teaching
I teach courses on waves phenomena for borehole geophysics and tomography. I recently introduced and co-taught a new course on computational geosciences.
Professional Activities
I was the First Vice President of the Society of Exploration Geophysicists in 2003-04, and have served as the Distinguished Lecturer for the SPE, SEG, and AAPG. -
John A. Harrison
Visiting Professor, Earth System Science
BioDue largely to human activities associated with food and energy production, the world is experiencing an un-precedented mobilization of nutrients such as nitrogen (N) and phosphorus (P). A substantial portion of this mobilized N and P flows into streams and rivers, and eventually down to coastal waters, where nutrient over-enrichment has been associated with a host of environmental impacts. En route to the ocean, these nutrients can alter ecosystem function as well as the balance of atmospheric greenhouse gases.
I use experimental and spatially explicit modeling approaches to elucidate processes governing the mobilization, transport, transformation, and ecosystem/biogeochemical impacts of land-based N, P, and other bio-active elements. For more information about me and my research group, please see my Washington State University research page: https://labs.wsu.edu/gcwblab/ -
Bard Harstad
David S. Lobel Professor in Business and Sustainability, Professor of Environmental Social Sciences, Senior Fellow at the Stanford Institute for Economic Policy Research and Professor, by courtesy, of Economics
BioWith a PhD from Stockholm University, Harstad taught at Kellogg School of Management, Northwestern University, 2004-2012, and then at the University of Oslo 2012-2023, before joining the GSB in 2023. His fields include political economics, environmental economics, and applied theory. Specific research projects include the design of international agreements, trade agreements and climate agreements, supply-side environmental policies, and policies that motivate environmental conservation and reducing deforestation.
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Eric Hartge
Research Development Manager, Center for Ocean Solutions
BioEric Hartge joined the Stanford Center for Ocean Solutions as a research and curriculum development intern in November 2010 before becoming a research analyst in July 2011 and then the senior research analyst in November 2013. In the summer of 2015 he was promoted to Research Development Manager. He specializes in organizational management and project portfolio development.
Eric previously worked with the Chesapeake Bay Foundation as the Education Program Manager for Baltimore Harbor with a focus on the human impact on the water quality and fisheries of the Chesapeake Bay. This followed extensive experience in environmental education in the Leeward Islands, Mexico, Costa Rica and Hawai’i. He also gained enough sea time aboard research ships with the Sea Education Association to earn a USCG Near Coastal Master's and Ocean Mate's License.
Eric also engages in intermittent student coursework through designing, coordinating, and teaching courses such as Oceans By Design with the Stanford School of Design, Outlaw Ocean Policy Practicum with Stanford Law School, and the Blue Foods for Indonesia Action Lab with Stanford Law School and Stanford’s Human and Planetary Health Initiative. His current programmatic work includes the role of Project Manager for a Global Environment Facility International Waters Project on Strengthening and Enabling the Micronesia Challenge 2030.
Eric received his M.S. in environmental sciences and policy from Johns Hopkins University and his B.S. in marine biology from the College of Charleston. His professional and academic experience includes estuarine science, natural resource management, stakeholder engagement, project management, portfolio management, environmental education, decision analysis, data visualization, grant writing, project portfolio management and environmental education. Eric holds certificates in Advanced Project Management, Strategic Decision and Risk Management, and Decision-Making for Climate Change. -
Thomas Hayden
Advanced Lecturer
BioThomas Hayden is Director of the Master of Arts in Earth Systems, Environmental Communication Program at Stanford University. He teaches science and environmental communication and journalism in Stanford's School of Earth, Energy & Environmental Sciences and Graduate Program in Journalism. He came to Stanford in 2008, following a career of reporting and writing about science and environmental issues for national and international publications.
Hayden’s journalism career began at Newsweek magazine in New York, where he was an American Association for the Advancement of Science Mass Media fellow in 1997. In 2000, he moved to US News & World Report in Washington, DC, where he covered science, the environment, medicine, culture and breaking news as a senior writer. Since 2005, Hayden has been a freelance journalist. His cover stories have appeared in publications including Wired, Smithsonian, National Geographic, Washington Post Book World and many others. He has reported from South America, Europe, and Asia; and North America from New Orleans to the Canadian Arctic.
Hayden is coauthor of two books. He wrote the 2007 national bestseller On Call in Hell, about battlefield medicine in Iraq, with Navy doctor Richard Jadick. In 2008 he collaborated on the critically acclaimed Sex and War, about the biological evolution and cultural development of warfare through human history, with Malcolm Potts of the University of California, Berkeley. He was the lead writer on the 2010 9th revision of the iconic National Geographic Atlas of the World. And he was coeditor of and a contributor to The Science Writers' Handbook: Everything You Need to Know to Pitch, Publish and Prosper in the Digital Age, published in 2013.
In 2005, Hayden taught science writing in The Writing Workshops at Johns Hopkins University in Baltimore with his wife and fellow science journalist, Erika Check Hayden. He was a founding faculty member in the annual Banff Centre Science Communications workshop, where he taught from 2006 until 2010, and was involved as a speaker and trainer with the Leopold Leadership Program for environmental scientists from 2000 to 2013.
Hayden graduated from his hometown school, the University of Saskatchewan, with a Bachelor of Science in Agriculture (honours) degree in applied microbiology and food science, and received an MS degree in marine biology from the University of Southern California. He completed five years of doctoral study in biological oceanography at USC, before leaving science for journalism with A.B.D. status. He spent more than nine months at sea cumulatively over five years, conducting oceanographic research from Southern California to San Francisco Bay, and from Antarctica to Easter Island.
In 2015, Hayden helped launch a new graduate degree program in Stanford's School of Earth, Energy & Environmental Sciences. The Master of Arts in Earth Systems, Environmental Communication degree is focussed on the study and practice of effective, engaging, accurate communication of complex environmental and Earth systems information to nonspecialist audiences. -
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
