This scatter plot shows the relationship between GDP and CO₂ emissions for countries in 2020, with circle size encoding population and color highlighting China, the United States, and India. Hovering over a point reveals a tooltip with country details. Built with D3 v7, the visualization uses d3.tsv for data loading, d3.scaleLinear for axes, d3.scaleSqrt for sizing, and d3.axisBottom/axisLeft for rendering SVG axes with animation on tooltip transitions.