This example renders a natural Earth projection world map using SVG. It displays country boundaries and landmasses in brown with red strokes, overlaid on a light blue sphere representing the globe. The visualization loads geographic data from the world-atlas TopoJSON file, converts it to GeoJSON using `topojson.feature`, and draws the paths with `d3.geoPath` and `d3.geoNaturalEarth1`. The sphere outline is generated from a GeoJSON Sphere object, and styling is applied via CSS classes.