This map shows all earthquakes from the past 30 days, with point size encoding magnitude and color encoding depth category (red for shallow, green for intermediate, blue for deep). The visualization overlays tectonic plate boundaries in orange, drawn from a GeoJSON dataset, atop a world map rendered from TopoJSON. Earthquake data is fetched live from the USGS feed, with each quake rendered as a circle positioned by its longitude/latitude, sized by magnitude (proportional to 1.5^mag), and colored by depth (shallow <70km, intermediate 70–300km, deep ≥300km). Circles link to the USGS event page. The map uses an equirectangular projection with graticule and outline, combining three data sources: country boundaries, tectonic plate boundaries, and recent earthquake records.