This area chart visualizes global population growth over time, using a curved baseline to show the upward trend in population from historical data. The visualization employs D3 v7 with an SVG renderer, using `scaleTime` and `scaleLinear` for the axes and an `area` generator with `curveBasis` for the filled path. Data is loaded from a CSV file, with the y-axis formatted in billions. The chart includes labeled axes, gridlines, and a title, styled with custom CSS.