This area chart visualizes yearly global CO₂ emissions in million metric tons, with a steelblue filled region showing emissions over time on a linear scale. The visualization uses D3 v6 APIs including `d3.csv` for data loading, `d3.area` for path generation, and `d3.axisBottom` and `d3.axisLeft` for axes. The data is loaded from a GitHub gist CSV file. A title, axis labels, and a clean SVG rendering with margins complete the chart.