Fundamental principles and best practices of scientific visualization with a strong emphasis on hands-on application in engineering and environmental sciences. Students learn how to create clear, accurate, and interpretable figures — covering visual perception, graph anatomy (axes, scales, aspect ratios, typography, line weights), and colour theory including accessible and colourblind-safe palettes. The course covers essential visualization types: time series, histograms, bar and pie charts, scatter plots, box plots, heatmaps, and table-based displays. Students are required to bring their own laptops; visualization tasks use spreadsheet-based and scripting tools.