This interactive treemap visualizes global metrics—such as CO₂ emissions, population, and GDP—for countries grouped by region, with a dropdown to switch between twelve data dimensions. Built with D3.js, it uses `d3.treemap` and `d3.hierarchy` to compute the layout and `scaleSequential` with `interpolateWarm` for color encoding. Hovering reveals a tooltip with region, country, and metric-specific values. The viz renders as SVG, sourcing data from a bundled global dataset.