This visualization displays global earthquake activity from the past 30 days on an interactive world map. Circles are positioned using a D3 geoEquirectangular projection, with circle size encoding earthquake magnitude. Color encodes depth, with red for shallow (<70km), green for intermediate (70-300km), and blue for deep (≥300km) earthquakes. The map also shows country boundaries, graticules, and tectonic plate boundaries. Users can click any earthquake circle to open its USGS details page in a new tab, or pan and zoom using the d3.zoom() interaction. Additional brush-based zooming is implemented to allow for more intuitive exploration of the data.