This interactive D3.js visualization explores relationships between GDP per capita, CO2 emissions per capita, population, and renewable energy adoption across countries from 2018–2023. Three modes—a 2D scatterplot, small multiples by region, and animated year-by-year transitions—allow comparison of temporal trends. The SVG rendering uses d3.scaleOrdinal, d3.scaleSqrt, and d3.extent for consistent scales, with tooltips featuring configurable delay and a race timer animation. Data comes from a CSV file loaded via d3.csv.