The visualization compares the environmental impact of four protein sources—cattle, pork, poultry, and mealworms—using a grid of small colored squares to represent land use, water consumption, and greenhouse gas emissions. Each square encodes a unit of resource use, with colors distinguishing the three metrics: orange for land, blue for water, and red for warming. The chart is built with D3 v4, drawing SVG rectangles in a loop for each metric, positioned in a 5-column grid with spacing. Data comes from a local CSV file, and the visualization uses raw numeric values directly without scaling.