This example uses D3.js and TopoJSON to generate an orthographic projection map of the world. It loads world country boundaries from a JSON file hosted on unpkg, converts the TopoJSON data into geographic features, and renders each country as a green SVG path with a subtle black stroke. The visualization employs `d3.geoOrthographic` and `d3.geoPath` to create the projection, with the dark blue background and minimal styling coming from the linked CSS.