This example renders a red area chart of world population by year using D3.js v7 and SVG. It loads CSV data from a VizHub dataset, parsing the year column into JavaScript Date objects for a time-based x-axis and the population values for a linear y-axis. The chart employs `d3.area()` with a `curveBasis` interpolation to create the filled shape, along with `d3.axisLeft` and `d3.axisBottom` for labeled axes with a custom tick formatter converting billions. The rendered SVG includes a title, axis labels, and grid lines via tick size extensions.