Member of editorial board, Acta Geochimica, 2014 -
Co-guest editor, Dec 2017 issue of the Elements Magazine "The world of 800 ppm CO2."
Co-guest editor, June 2011, v.7, No.3 issue of the Elements Magazine "Global Water Sustainability."
Co-chair, Theme "Hydrogeochemistry," Goldschmidt Conference - the Annual Meeting of the Geochemical Society and European Association of Geochemists, August 16-21, 2015, Prague, Czech Republic.
Co-chair, Scientific Committee, International Workshop "Frontiers in International Critical Zone Science" sponsored by National Natural Science Foundation of China, US NSF, UK Research Council, French CNRS, German Research Foundation (DFG), Beijing, China, 21-23 May 2014.
Co-chair Theme 21 "Hydrogeochemistry and global sustainable water resources," Annual Goldschmidt Conference – the Annual Meeting of the Geochemical Society and European Association of Geochemists, August 14 – 18, 2001, Prague, Czech Republic.
Member, Finance Committee, The Geochemical Society, 2014-
Member, Strategic Planning Committee, International Association of GeoChemistry (IAGC), 2014-
for Indiana University and the Department of Geological Sciences