Presentation av Peter Guttorp CF:s Professor i Miljövetenskap 2004-2005 , (University of Washington, Seattle) Environmetrics - Combining Science and Statistics Abstract I present some of my research interests, with an emphasis on the environment in a broad sense, and methodological tools that I and my co-workers have been using. For example, some flavors of hidden models have been used to describe stem cells for blood production and rainfall, a Bayesian hierarchic model is used to combine different types of rainfall measurements, nonstationary covariance modeling is used to estimate exposure to air pollution. I also discuss the connection between health effect models and environmental standards and more generally the relationship between scientists and decision makers.