A world map displays the global distribution of missing migrants, with circles sized by the total number of dead and missing. A linked time histogram below shows the same data aggregated by month, with a d3.brushX selection filtering the map’s circles in real time. Using React’s useState and useEffect, the example combines d3.geoNaturalEarth1, d3.geoPath, and d3.scaleSqrt with a TopoJSON world atlas, while the histogram uses d3.bin and d3.scaleTime. Data comes from the Missing Migrants Project.