This example presents a Sankey diagram visualizing greenhouse gas flows, with nodes representing sectors like Energy and Agriculture, and links showing the distribution of gases such as Carbon Dioxide and Methane. Built with React and rendered as SVG, it uses the D3.js library’s custom `d3.sankey` module to handle layout and the `d3.behavior.drag` functionality for node interactivity. The chart’s unit is "Widgets," and the data is pulled from a JSON file.