This sankey diagram visualizes greenhouse gas emissions, showing flows from energy and industrial sources to various sectors and ultimately to specific gases like carbon dioxide and methane. The interactive visualization is built with D3.js v3, using the custom `d3.sankey` layout to position nodes and compute link paths. Users can drag nodes to rearrange the diagram, with the `sankey.relayout` method updating link curves in real time. The data comes from a JSON file describing emission sources, intermediate sectors, and final greenhouse gas outputs.