This gallery piece contrasts a Plotly 3D scatter of GDP per capita, renewable energy share, and CO₂ per capita for 50 countries in 2023 with a D3.js 2D bubble chart that encodes the same three variables using position and point area. A small-multiples view uses shared D3 scales across six yearly panels. An animated D3 version cycles through years with transitions. Hover tooltips and click-to-select interactions demonstrate responsiveness, with an optional two-second delay to illustrate latency.