Salish-Kootenai College, Pablo Montana, 8 December, 2006.

“Viruses from Hell” PSU Geology Department, 29 November, 2006

“Viruses from Hell” Novartis Institutes for Biomedical Research Basel. Switzerland 23 August, 2005

“Viruses from Hell” University of California, Irvine. 6 May, 2005

“Viruses from Hell” California State University, Chico. 22 April, 2005

“Viruses from Hell” BHP-Billiton Johannesburg Technology Center. South Africa. 17 March, 2005 (Part of 2 week visit as “visiting scholar”.)

“Viruses from Hell” Washington State University, Vancouver. 15 November, 2004.

“Hot Viruses in the Hood”, Portland State University, Biology Department, 21 October, 2004

"Viruses from Hell: Genetics, Genomics and Evolution". Keynote Speaker, UC-Berkeley 5th Annual Interdepartmental Student Microbiology Symposium Saturday, 10 April, 2004. (invited by students). Previous speakers include: Susan Goldman, Bonnie Bassler, Rich Lenski, Gary Schoolnik
“Viruses from Hell” Biology Department, Reed College, 31 October 2003

“Viruses from Hell, Bumpass Hell” Biology Department Humboldt State University, 26 September, 2003. (Invited by students)

“Life in Boiling Acid: Extreme Viruses” Apprenticeships in Science and Engineering (High school students) Midsummer Conference. Oregon State University, 11 July, 2003.

"Hot Viruses: Genetic Elements of Sulfolobus" Molecular Microbiology and Immunology Department, Oregon Health Sciences University, 27 May, 2003

"Hot Viruses: Genetic Elements of Sulfolobus" Molecular Biology and Microbiology Department, Oregon Graduate Institute, Oregon Health Sciences University, 22 November, 2002

“A Molecular Biology Primer”, Guest lecture in Mathematics 607, Seminar in Computational Biology. Mathematics Department, Portland State University. 15 April 2002

“Life in Boiling Acid: Viruses of Sulfolobus” Chemistry Department, Portland State University, 10 May 2002

“Hot Viruses: Genetic elements of Sulfolobus “ BIOLab, Biology Interactive Outreach Spring Symposium, Portland State University, 6 April 2002

New England Biolabs, Boston, U.S.A. August 2001
ATCC Workshop on Extremophiles, Baltimore, U.S.A. July 2001
ATCC Workshop on Extremophiles, Baltimore, U.S.A. July 2000
Portland State University, U.S.A. May 2000
Groningen University, The Netherlands. April 2000
Free University of Brussels, Belgium. November 1999
Montana State University, U.S.A. July 1999
Max Planck Institut für Molekulare Genetik, Berlin, Germany. April, 1999
The University of Denver, U.S.A. January, 1999
Universität Regensburg, Germany. December, 1998
University of Paris, XI, Orsay, France. November, 1998
University of Naples, Frederico II, Italy. October, 1998
University of Rome, La Sapienza, Italy. October, 1998
Consiglio Nazionale delle Ricerche, Naples, Italy. October, 1998
Center of Marine Biosciences, Baltimore, U.S.A. August, 1998
Wageningen Agricultural University, The Netherlands. June, 1998
Philipps University, Marburg, Germany. March, 1998
Korea Research Institute for Biotechnology and Biosciences, Yusong, Korea. February, 1998
University of California, Davis, U.S.A. January, 1998