This visualization animates population projections on a world map, displaying how the size of circles at country locations changes over time from 2020 onward. The map is rendered using D3 v5 with an SVG projection via `d3.geoNaturalEarth1` and `d3.geoPath`, while the circles use `d3.scaleSqrt` for sizing. A timestamped sequence of transitions animates the circles’ radii across years, driven by data from a CSV of population estimates. The map also supports zooming through D3’s `zoom` behavior, with hover tooltips highlighting country details.