This visualization shows bee colony loss trends over time across different states, with each line representing a state’s annual colony counts. The graphic uses a line mark with size and opacity adjustments to display time-series data. The example is built with the Vega-Lite API, which wraps Vega-Lite and Vega, and incorporates D3.js for data loading via `d3.csv`. Data comes from a remote GitHub gist, and the visualization renders as a scalable SVG with an interactive tooltip handled by Vega-Tooltip.