This example shows a spinning orthographic globe with continent outlines, rendered as SVG paths. The map rotates continuously using a `d3.timer` that updates the projection’s rotation, while `d3.geoPath` redraws the continent geometry each frame. The globe is styled with a light blue background and uses GeoJSON country data loaded from a remote URL. Although a CSV file with city pollution data is included, it is not referenced in the code. The visualization relies solely on D3 v4’s geographic and timer utilities.