This example displays a world map using a natural Earth projection, with countries filled in light green and the globe as a blue sphere. It loads geographic data from a TopoJSON file stored in a GitHub gist, then converts it to GeoJSON using the `feature` function from TopoJSON. The map renders in SVG, with `d3.geoPath` and `d3.geoNaturalEarth1` handling the projection and path generation. The visualization is static, showing only the country outlines and spherical background.