This area chart visualizes world population over time, using a smooth basis curve to connect data points. The visualization is built with D3 v5, leveraging its `scaleTime` and `scaleLinear` for axes, `area` and `curveBasis` for the chart shape, and `axisBottom`/`axisLeft` for ticks. Population figures are formatted from gigabytes to billions, with data loaded from a VizHub-hosted CSV file.