Two side-by-side scatterplots show life expectancy at birth for every country in 1960 and 2012, with each orange circle representing a nation and its vertical position indicating the reported years. The paired charts let viewers compare global longevity changes across the five-decade span. Using d3.v3, the code loads the CSV data, sorts countries by life expectancy, and renders the circles with SVG, applying a staggered transition to animate their appearance. The y-axis uses a fixed 20-to-90 year scale, and hover tooltips reveal each country’s exact value. Data originates from the World Bank’s 2014 indicator.