Dr. Fernando Rosario-Ortiz & Dr. Ray Hozalski are the organizers of the 2020 IHSS Conference.  Dr. Rosario Ortiz is a professor of engineering at the University of Colorado and Dr. Hozalski is a professor of engineering at the University of Minnesota.
This conference is being organized in collaboration with the International Humic Substances Society.



The conference and lodging will be at YMCA of the Rockies in Estes Park.
Learn more…


Transportation options are available from Denver International Airport (DIA) and around Estes Park.
Learn more…

Field Trip

All day outing to Rocky Mountain National Park.
Learn more…


Choose from rafting, zip-lining, hiking, archery, horseback riding.
Learn more….

Social events

Outdoor cookout, music, banquet dinner with live music and square dancing.
Learn more…

Scientific Committee

  • E. Michael Thurman, CU Boulder
  • Yiannis Deligiannakis, University of Ioannina
  • Kathleen Murphy, Chalmers University
  • William Becker, Hazen and Sawyer
  • Julie Korak, CU Boulder
  • Diane McKnight, CU Boulder
  • Raymond Hozalski, University of Minnesota
  • Fernando Rosario-Ortiz, CU Boulder
  • Heike Knicker, Instituto de Recursos Naturales y Agrobiología de Sevilla
  • Teodoro Miano, University of Bari Aldo Moro
  • Thomas Borch, Colorado State University
  • Deborah Dick, Federal University of Rio Grande do Sul
  • Jianming Xu, Zhejiang University
  • Roger Swift, University of Queensland