A radial family tree plots descendants around a central root, with each node’s radial position mapping birth year. Concentric decade rings and labels provide temporal context, while curved links connect parents to children. The visualization is built with D3.js, using `d3.layout.tree` for hierarchical layout and `d3.svg.diagonal.radial` for curved edge paths. Node colors vary by depth, and the SVG rendering uses a custom year-to-radius scale derived from birth dates in the JSON data.