A stacked area chart of global CO2 emissions from 1790 onward, segmented by fossil fuel types (gas, liquids, solids) and other sources like cement production and gas flaring. The visualization uses D3 v4 with SVG rendering, employing `d3.stack` for layering and `d3.area` with `curveBasis` for smooth paths. Labels are positioned via the `d3-area-label` library, while hover effects darken each segment. Data comes from a CSV of global emissions, scaled to gigatons, with responsive resizing and interactive axes.