The Training Program in Environmental Health Statistics, originally established in 1982, prepares pre-doctoral and postdoctoral fellows for research in the application of biostatistics, statistical genetics and genomics, and data science to the environmental health sciences.   The program is administered through the Department of Biostatistics, with active participation by faculty members from the Department of Environmental Health and Department of Epidemiology, also located at the Harvard School of Public Health. Trainees receive high-quality instruction in basic biostatistical theory and methods, such as probability, statistical inference, computing and data analysis.  The program also provides training in specialized topics of particular relevance for environmental applications, such as longitudinal and multivariate data analysis, Bayesian methods, causal inference as well as statistical genetics, environmental genomics and other high-dimensional data techniques.  The program also provides training in statistical methods relevant to environmental exposure assessment such as measurement error models, spatio-temporal methods, and data fusion methods for integrating exposure and health data from disparate temporal and spatial scales.