Education
Bachelor of Science, King's College, London, 1976. Doctor of Philosophy, University Saskatchewan, Saskatoon, Canada, 1983.
director agricultural studies educator
Bachelor of Science, King's College, London, 1976. Doctor of Philosophy, University Saskatchewan, Saskatoon, Canada, 1983.
Professor University Saskatchewan, Canada, 1986—2002, University Göttingen, Germany, since 2002. Executive committee Science Committee Problems the Environment, Paris, since 2001. Director Inter-American Institute for Global Change Research, São José dos Campos, Brazil, since 2005.
Member of American Society Agronomy.