A zoomable tree map visualizes Nobel laureate data from a CSV file, hierarchically organized by country, city, institution, and expert name. The D3.js hierarchy layout with `d3.linkHorizontal` connections renders an SVG tree, using `d3.csv` to load the data and sorting nodes by ranking fields. The dark blue background and interactive collapsible nodes display the dataset's nested structure, with a dynamic width based on the window size.