This fork of the Keeling Curve plots atmospheric CO₂ measurements over time as a line chart, with time on the x-axis and average values on the y-axis. The visualization uses d3.line and d3.timeParse to parse and render the data, which comes from NOAA’s Global Monitoring Laboratory. Axes are drawn with axisLeft and axisBottom, and the chart updates dynamically after fetching and parsing the CSV data.