This area chart visualizes global population growth from 1950 to 2020 using data from the United Nations World Population Prospects 2019. The filled path, rendered with the d3.area generator and curveBasis smoothing, shows population rising steadily from under 3 billion to nearly 8 billion. The SVG chart uses d3.scaleTime and d3.scaleLinear for axes, with custom tick formatting converting millions to billions. Both axes include labeled ticks and gridlines, while the yellow area fill highlights the overall upward trend.