I have given 208 invited talks in my career and 87 invited talks in the last five years (2019-2023). I have given talks in the US, Canada, United Kingdom, Sweden, Germany, France, Switzerland, Norway, Poland, Spain, Saudi Arabia, United Arab Emirates, Israel, China, Japan, Slovenia, South Africa, and Brunei.
Universiti Brunei Darussalam, make-up 2021-2022 Darcy lecture, August 29, 2023.
Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates, January 25, 2023.
2022
KAUST joint seminar of the Earth Science and Engineering (ErSE) and Energy Resources and Petroleum Engineering (ErPE) programs, “Geochemical modeling of CO2-water-rock interaction and its applications to carbon sequestration, geothermal energy, and hydrogen storage,” Saudi Arabia, December 7, 2022.
University of Neuchâtel, Switzerland, “Hydrogeochemistry in the 21st century”, October 17, 2022. In-person.
University of Basel, Switzerland, “Future water”, October 12, 2022. In-person.
[193] Geological Society of America annual meeting, Denver, CO, Hydrogeology Div plenary, Darcy Distinguished Lecture, “Hydrogeochemistry in the 21st century”, Virtual. October 10, 2022
Central European Group of International Association of Hydrogeologists, invited plenary talk, Rogaška Slatina, Slovenia, October 5-7, 2022. In-person.
Swiss Federal Institute of Aquatic Science and Technology (Eawag), Eawag-wide seminar & Darcy lecture, September 29, 2022. In-person.
International Association of Hydrogeologists 49th annual congress, invited plenary keynote, Wuhan, China. September 19, 2022, Virtual.
Swiss Federal Institute of Aquatic Science and Technology (Eawag), Department of Drinking Water and Water Treatment, September 19, 2022. In-person.
Paul Scherrer Institute, 5232 Villigen, Switzerland, September 8, 2022, In-person.
Joint national meeting of the Geological Association of Canada, Mineralogical Association of Canada, the International Association of Hydrogeologists – Canadian National Chapter, and the Canadian Society of Petroleum Geologists, Halifax, Nova Scotia, Canada. May 17, 2022, In person.
Washington State Hydrogeology Symposium (bi-annual), Tacoma, WA, May 10, 2022. keynote speaker. In-person.
University of Wisconsin, Madison, Department of Geosciences, Department of Civil and Environmental Engineering; Wisconsin Geological and Natural History Survey, Darcy lecture & Weeks Lecture April 29, 2022, Virtual.
University of Toronto, Department of Earth Sciences, April 21, 2022, in-person.
University of Waterloo, Department of Earth and Environmental Sciences April 20, 2022, in person.
University of Guelph, G360 Institute, April 19, 2022, in-person.
Colorado Groundwater Association annual symposium keynote speaker, Denver, CO, April 15, 2022, in-person
Colorado School of Mines, Golden, CO, the Van Tuyl Lecture & Darcy Distinguished Lecture, April 14, 2022, In-person.
Colorado State University, Fort Collins, CO. April 13, 2022, in person.
U.S. Environmental Protection Agency, sponsored by Office of Research & Development, |Center for Environmental Measurement & Modeling, and open to all US EPA, CCS, April 8, 2022, Virtual
Geological Society of America, Joint North Central and Southeast sections joint meeting, Cincinnati, OH. Darcy Distinguished Lecture, Future Water Virtual. April 7, 2022
NGWA Darcy Distinguished lecture broadcasts, March 28, 29, 30, 2022.
University of Kentucky, Department of Earth and Environmental Sciences and the Kentucky Geological Survey, March 11, 2022, Virtual.
The Edwards Aquifer Authority and University of Texas – San Antonio, San Antonio, Texas, March 9, 2022, hybrid.
U.S. Geological Survey Water Mission Area, March 9, 2022, Virtual.
University of Texas-Austin, Austin, TX, March 7, 2022, hybrid.
Texas A & M University, College Station, March 4, 2022, virtual.
University of Laval, University of Ottawa, Quebec Groundwater Network, March 3, 2022, Virtual.
Chevron Fellows Learning Series seminar, Houston, Texas. March 2, 2022, hybrid.
University of Arizona, Tucson, AZ. February 24, 2022, in-person.
Arizona State University, Tempe, AZ. February 23, 2022, in-person.
Chapman University, Orange, CA. February 17, 2022, Virtual.
Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Distinguished Scientist Seminar Series & Darcy Lecture, Berkeley, CA, February 11, 2022, Virtual.
University of Utah, Guy F. Atkinson Distinguished Lecture & Darcy Lecture, Salt Lake City. February 10, 2022, Virtual.
University of California – Davis, Graduate program in Hydrological Science and Water Resources, February 10, 2022, Virtual.
University of Texas – Dalla, Department of Geosciences, January 20, 2022, Virtual.
[157] IAH German chapter and German Association of Hydrogeologists (FH-DGGV, Fachschaft Hydrogeologie der Deutschen Geologischen Gesellschaft), January 14, 2022, Virtual.
2021
Vanderbilt University. Department of Earth and Environmental Science, December 17, 2021, Groundwater Week, an annual national conference organized by the National Groundwater Association, Nashville, TN. December 15, 2021.
Groundwater Summit, an annual national meeting organized by the National Ground Water Association, Keynote address & Darcy lecture. December 7, 2021
University of Michigan, Department of Earth and Environmental Science, Ann Arbor, MI. The William T Smith Lecture. December 3, 2021.
Ohio State University, School of Earth Sciences, Columbus, OH, November 19, 2021.
Environmental Professionals of Iowa. November 16, 2021.
NGWA Darcy Distinguished lecture November 15, 16, 18, 2021, with participants from:
Canada
University of Alberta, University of Calgary, University of Regina, Simon Fraser University, Canada. November 12, 2021.
The University of Delaware, Department of Earth Sciences, November 11, 2021.
Princeton University, Department of Civil and Environmental Engineering, November 10, 2021.
Great Britain Chapter of the International Association of Hydrogeologists (IAH), the Hydro group of The Geological Society (of London), IAH Western & Central European Chapter. November 9, 2021.
National Science Foundation, GEO Directorate Distinguished Lecture & Darcy Distinguished lecture. October 22, 2021.
Geological Society of America annual meeting, Division of Hydrogeology, Portland, OR. October 11, 2021.
Oregon State University, Graduate program in hydrogeology, Corvallis, OR., October 8, 2021.
Grand Valley State University, Grand Rapid, MI, October 4, 2021.
Hope College, Holland, MI, October 4, 2021.
[138] Michigan State University, Department of Earth and Environmental Sciences, October 1, 2021.
Western Michigan University. Department of Geological and Environmental Sciences, October 1, 2021.
Dartmouth College, Department of Earth Sciences, September 23, 2021.
University of Columbia, sponsored by Lamont-Doherty Earth Observatory, Lenfest Center for Sustainable Energy, broadcasted to Department of Earth and Environmental Sciences, Department of Earth and Environmental Engineering, and Barnard College. Darcy Distinguished lecture, September 22, 2021.
S.S. Papadopulos & Associates, Inc., September 15, 2021.
Saudi Aramco EXPEC Advanced Research Center monthly webinar series & Darcy Distinguished lecture, May 25, 2021.
Indiana University – Purdue University Indianapolis and organizations in the Wabash basin (Purdue University, University of Illinois Urbana-Champaign, Illinois Geological Survey, USGS Indianapolis office, Hoosier Environmental Council), April 12, 2021.
Los Alamos National Laboratory, Frontiers in Geoscience colloquium series & Darcy Distinguished lecture, March 15, 2021.
University of Cambridge, UK & Earth to Earth seminar series (a UK-wide colloquium consortium sponsored by the University of Cambridge, University of Oxford, and St Andrews University). March 11, 2021.
King Abdullah University of Science and Technology, Saudi Arabia, February 17, 2021.
King Fahd University of Petroleum and Minerals, Saudi Arabia. February 3, 2021.
Departmental colloquium, Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, February 15, 2024.
American Geophysical Union annual fall conference, Invited speaker, San Francisco, December 11 – 15, 2023.
International Association of Geochemistry 17th Water-rock interaction symposium and 14th Applied Geochemistry conference, Sendai, Japan, August 18-22, 2023, keynote talks “Advancing water-rock interaction research with new isotopic and geochemical modeling tools” in the session Water-rock interaction fronts to climate change and “Isotope doping method for advancing near equilibrium geochemical kinetics” in the session Isotope geology: climate change, geosciences, atmospheric study, residence times, critical zone & groundwater flow.
American Chemical Society, annual fall meeting, invited talk “Illuminating chemical reactions at or near chemical equilibrium with non-traditional stable isotopes” in the session “Aquatic Science and Technology at Environmental, Disciplinary, and Societal Interfaces: A Symposium Honoring the Career of Janet Hering”, San Francisco, August 10-17, 2023.
Australia Commonwealth Scientific and Industrial Research Organisation (CSIRO), keynote presentation: “Cutting Edge Science Symposium: Locking Carbon in Minerals”, June 20-21, 2023, Perth, Australia.
The University of Cambridge, Department of Earth Sciences, weekly departmental seminar, United Kingdom, June 13, 2023.
American Chemical Society, annual spring meeting, invited talk “Geochemical modeling as a bridge between fundamental understanding of CO2-water-mineral interactions and practical applications for CO2 sequestration” in the session “Geochemistry for CO2 Capture, Conversion, and Sequestration”, Indianapolis, March 26-30, 2023.
Dalian University of Technology, School of Energy and Power Engineering, “Geochemical modeling of CO2-water-rock interaction and its applications to carbon sequestration”, China, November 24, 2022. Virtual.
KAUST Research Conference on Scientific Computing and Machine Learning (SCML2022), invited plenary talk “Machine learning applications to hydrogeochemistry and geochemical modeling,” King Abdullah University of Science and Technology, Saudi Arabia, November 14-18, 2022.
Goldschmidt Conference, the annual conference of the Geochemical Society and European Association of Geochemistry, Honolulu, Hawaii, July 10-15, 2022, Invited talk for the session “Silicate mineral weathering and carbonate mineralization: applications of CO2-fluid-mineral reactions to surficial and subsurface carbon capture and storage,” virtual.
American Chemical Society, annual spring meeting, invited talk “Experiments and modeling of barite recrystallization in 137Ba-enriched solutions with variable [Ba2+]/[SO42-] ratios” in the session “Mineral-Water Interactions over Multiple Scales – Connection between Laboratory and Field Scale Observations”, San Diego, CA. March 21, 2022. Virtual.
University of Michigan, Department of Earth and Environmental Science, Ann Arbor, MI. The William T Smith Lecture. December 3, 2021.
University of Pennsylvania, Department of Earth and Environmental Sciences, September 17, 2021.
U.S. Geological Survey, the Geology, Minerals, Energy, and Geophysics Science Center, with staff located in Arizona, California, Nevada, Oregon, and Washington, webinar, June 11, 2020.
Environmental Resilience Institute webinar, Indiana University, April 6, 2020.
Indiana University, Department of Earth and Atmospheric Sciences, February 24, 2020.
U.S. Geological Survey Indianapolis office and Groundwater Focus Committee, Feb 6, 2020.
Texas A&M University, Department of Geology and Geophysics, ConocoPhillips seminar, October 4, 2019.
Northwest University, Frontier Forum Lectures #905, Xi’an, China, Dec 3, 2019
Laboratory Géosciences de l’Environnement, Toulouse (Université de Toulouse-CNRS), France, June 22, 2018.
Colorado School of Mines, Van Tuyl lecture, March 15, 2018,
Indiana University, Department of Earth and Atmospheric Sciences, April 10, 2018.
Indiana University, School of Public and Environmental Affairs, April 17, 2018.
Rensselaer Polytechnic Institute, Department of Earth and Environmental Sciences, Feb 28, 2017.
UNESCO workshop on karst critical zone, and international training courses with students from 20 countries, keynote speaker, Kunming, China, July 18-20, 2017.
Chinese Academy of Sciences, Institute of Geochemistry, advances in isotope geology, June 18 – 21, 2017, Guiyang, China.
Tongji University, Shanghai, China, June 4, 2017.
China University of Science and Technology, May 20, 2017.
Jiaxing University, Dec 29, 2017.
Southern Methodist University, Dallas, Texas, September 6, 2016.
Jilin University, Changchun, China, colloquium, May 15, 2016.
Beijing Normal University, College of Water Resources, Beijing, China, May 10, 2016.
University of Notre Dame, Department of Civil Engineering and Geological Sciences, departmental colloquium, February 25, 2016.
Goldschmidt conference, silver anniversary talk, “Advances in hydrogeochemistry in the past 25 years”, Prague, Czech Republic, August 16-21, 2015.
Chinese Academy of Sciences, Institute of Deep Ocean Sciences and Engineering, “New methods in studies of silicate reaction kinetics”, December 23, 2015, Sanya, Hainan Province, China.
The Second Institute of Oceanography, State Administration of Oceanography, Hangzhou, China, June 9, 2015.
Natural Science Foundation of China Forum “Developing Basic Geosciences Programs in China”, Keynote speaker, Chengdu, China, November 13, 2014; Title: “Advancing thermodynamics and kinetics research as a drive for basic geoscience research in China.”
University of New Hampshire, Durham, NH, October 16, 2014, Title: “Development of Critical Zone science programs in China and Europe and recent advances in measuring silicate reaction rates in the critical zone with silicon isotopes.”
Keynote speaker, “Earth’s Critical Zone Science” a Forum jointly sponsored by the Natural Science Foundation of China Forum (114th in Shuang Qi series) and Chinese Academy of Sciences (35th in series of Frontiers of Sciences and Technology), Guiyang, China, 9-11 May 2014. Title: Critical Zone formation, structure and evolution, and research emphasis in China.”
Jinlin University, Forum on geofluids, Changchun, China, September 13, 2014; Title “Recent developments and future directions in water-rock interaction basic and applied research.”
Tohoku University, Japan, 11th international workshop on WATER DYNAMICS, 11-17, March 2014; Title: “Recent development in dissolution – precipitation kinetics.”
Geological Survey of China Hangzhou, Center for agricultural geology research, June 4, 2014.
Peking University, School of Earth and Space Sciences, China, November 21, 2013.
Keynote speaker, “Critical Zone Research as a Drive for Basic and Applied Research on Water-rock Interactions in China,” workshop on critical zone processes and their effects on climatic, ecological, and environmental changes, organized by National Natural Science Foundation of China, Nanjing, China, April 22-25, 2013.
First Joint Scientific Meeting of Geological Society of China and Geological Society of America “CO2-Water-Rock Interactions during Geological CO2 Storage,” Chengdu, China, June 17-19, 2013.
University of Oslo, Department of Geosciences, Norway, May 3, 2012.
Chengdu University of Technology, China, May 30, 2012.
Northwest University of China, June 19, 2012.
Woods Hole Oceanographic Institution, October 18, 2011.
Geological Society of America annual convention, Pardee Keynote Symposium, “Global water sustainability,” Minneapolis, MN, USA, October 9 - 12, 2011.
[89] University of Illinois at Chicago, Department of Earth and Environmental Sciences, April 14, 2011.
Ben-Gurion University of the Negev, Israel, March 16, 2011.
Kent State University, Keynote speaker, “Decoding the disciplines: Helping students through the bottlenecks,” Scholarship of Teaching and Learning (SOTL) program, February 17, 2011.
Third U.S.-China CO2 Emissions Control Science & Technology Symposium, Hangzhou, China, December 10-12, 2010.
National Energy Technology Laboratory, Earth Science Seminar Series, Pittsburgh, PA, November 19, 2010.
Washington University - St. Louis, “Kinetics of water-rock interactions in geological carbon sequestration,” Department of Energy, Environmental and Chemical Engineering, November 5, 2010.
Indiana University – Bloomington, Scholarship of Teaching and Learning (SOTL) program, “The Case Study Method for the Assessment of Student Learning: Using Scientific Reasoning and Deep Geological Time to Predict Future Environmental Impacts,” September 24, 2010.
Beijing Normal University, Department of Physics, July 15, 2010.
Chinese Academy of Science, Institute of Geochemistry, Guiyang, China, May 25, 2010.
Institute for Study of the Earth's Interior, Okayama University at Misasa, May 18, 2010.
Ohio State University, School of Earth Sciences, April 23, 2010.
Ohio State University, Department of Chemistry, April 22, 2010.
University of Kentucky, The Rast-Holbrook lecture, Department of Earth and Environmental Sciences, March 25, 2010.
Indiana University – Bloomington, Joint seminar, Department of Geological Sciences, Department of Geography, and School of Public and Environmental Affairs, February 4, 2010.
Stanford University’s The Global Climate and Energy Project and USGS sponsored workshop on Caprocks and Seals in Geologic Carbon Sequestration, January 14, 2010.
Schlumberger-Doll Research, Cambridge, MA, January 5, 2010.
Annual Meeting of American Geophysical Union, Invited speaker, “Water in the Critical Zone: Major Elements, Trace Elements, and Isotopes as Biogeochemical Tracers,” Session H24, San Francisco, December 14 – 18, 2009.
Columbia University, Dept. of Earth and Environmental Engineering, New York, Oct. 2, 2009.
Mineralogical Society of America and The Geochemical Society short course “Thermodynamics and kinetics of water-rock Interaction,” Invited lecture, Davos, Switzerland, June 19 – 20, 2009.
University of Warsaw, Lectures and seminars, Faculty of Geology, Poland, May 12- 13, 2009.
University of Oxford, Department of Earth Sciences, England, May 1, 2009.
Norwegian Center of Excellence on “Physics of Geological Processes,” University of Oslo, April 30, 2009.
University of Wyoming, School of Energy Resources & Department of Geology and Geophysics, April 16, 2009.
KTH, Royal Swedish Institute of Technology, Department of Land and Water Resources Engineering, Stockholm, April 3, 2009.
American Chemical Society 237th annual national meeting, invited talk, special session on "Coprecipitation of metals during chemically and biologically induced mineral precipitation," Salt Lake City, UT, March 22-26, 2009.
Ohio State University, invited speaker, “Advances in the Science of carbon Sequestration,” meeting, Schlumberger, Battelle, AEP, Columbus, Ohio, March 9 – 10, 2009.
Hoosier Environmental Council, Inaugural lecture for “Hoosier Environmental Council Policy Forum Series”, Feb. 27, 2009.
University of Notre Dame, Department of Civil Engineering and Geological Sciences, January 22, 2009.
University of Albert-Ludwig University, Institute of Mineralogy and Geochemistry, Germany, December 16, 2008.
Swiss Federal Institute of Aquatic Science and Technology, Department of Water Resources and Drinking Water, November 4, 2008.
Academia Sinica, Center for Environmental Changes, Taipei, Taiwan, October 29, 2008.
National Taiwan University, Department of Geological Sciences, Taiwan, October 28, 2008.
China University of Geosciences, Wuhan, China, October 25, 2008.
Annual National Meeting of Petrology and Geodynamics, plenary address, 2008, Guiyang, China, October 19, 2008.
China University of Oceanography, October 16, 2008.
University of California – Berkeley, Dept. of Earth and Planetary Sciences, April 24, 2008.
Lawrence Livermore National Laboratory, Geochemistry Div., January 17, 2008.
Lawrence Berkeley National Laboratory, Div. of Earth Sciences, January 9, 2008.
ExxonMobil Upstream Research Company, “Modeling Water-rock Interactions with Applications to Geological Carbon Sequestration, EOR, and Digenesis,” Houston, July 18, 2007.
Chengdu University of Technology, June 6, 2007.
Chinese Academy of Sciences, Institute of Geochemistry, May 31, 2007.
Zhejiang University, Department of Earth Sciences, May 24, 2007.
Zhejiang University of Technology, College of Biological and Environmental Engineering, May 22, 2007.
University of Oregon, Department of Geological Sciences, Eugene, March 7, 2007.
Indiana University – Bloomington, “Recharge at Yucca Mountain, Nevada: The Science, Policy, and the Court,” School of Public and Environmental Affairs, Seminar Series on Environmental Science and Policy, October 5, 2006.
Geological Society of America Annual Meeting Topical Session “Paleohydrogeology and paleoclimate – looking into the past”, Salt Lake City, Utah, October 16-19, 2005.
Ohio State University, Department of Geological Sciences, April 21, 2005.
U.S. Nuclear Regulatory Commission, invited presentation before the Advisory Committee on Nuclear Waste, Rockville, Maryland, December 13, 2005.
Anglo Research, Quarterly seminar in chemistry, Johannesburg, South Africa, November 24, 2005.
Okayama University at Misasa, Japan, Institute for Study of the Earth's Interior, June 20, 2005.
Nanjing University, China, July 4, 2005.
Beijing University, China, July 7, 2005.
Zhejiang University, China, July 1, 2005.
International Conference on Safe Water, San Diego, California, October 21, 2005.
Swiss Federal Institute of Technology, Institute of Mineralogy and Isotopes, Zurich, Switzerland, April 13, 2004.
Paul Scherrer Institut, Villigen, Switzerland, June 24, 2004.
Institute of Earth Sciences Jaume Almera, Spanish Research Council (CSIC), Barcelona, Spain, April 22, 2004.
Indiana University-Purdue University Indianapolis (IUPUI), Department of Geological and Environmental Sciences, October 12, 2004.
Western Michigan University, Kalamazoo, Michigan, September 27, 2004.
PITTCON, invited speaker on chemical modeling, Orlando, Florida, March 14, 2003.
PPG Industries, corporation remediation group, 2003
U.S. Steel Corporation, Corporate environmental affairs manager meeting, 2003
Carnegie Mellon University, Department of Civil and Environmental Engineering, 2001
Southwest Research Institute, Center for Nuclear Waste Regulatory Analyses, 2001
University of Pittsburgh, Department of Mathematics, Numerical Analysis Group, 2001
Pittsburgh Geological Society, 2001
University of Minnesota, 2001
University of Pittsburgh, Department of Geology and Planetary Science, 2000
American Geophysical Union Annual Meeting, invited talk in a special session, 2000
Southwest Research Institute, Center for Nuclear Waste Regulatory Analyses, 1999
U.S. Geological Survey, Lakewood, Colorado, 1998
U.S. Geological Survey, Arizona District Office, Tucson, 1998
U.S. EPA, Robert S. Kerr Environmental Research Laboratory, 1998
Old Dominion University, 1998
Rensselaer Polytechnic Institute, 1998
University of Missouri-Rolla, 1997
Mobil Oil Company, 1997
BHP Copper USA, Tucson, AZ, 1997
Colorado Groundwater Association, 1996
Unocal Geothermal, 1994
U.S. Geological Survey, Menlo Park, 1994
Invited talk at Geological Society of America Annual Meeting, 1992
Pacific Northwest National Laboratory, 1992
University of Illinois-Chicago,1992
Queens College, 1992
Woods Hole Oceanographic Institution, 1991
University of Mississippi, 1991
