This dashboard analyzes U.S. pollution and respiratory health data from 2000 to 2020, sourced from a CSV file. It presents an interactive scatter plot linking pollutant levels (NO₂, CO, SO₂, O₃) to death rates, with selectable causes of death via HTML dropdowns. The visualization also includes multiple Plotly charts: line charts for death trends and pollution averages, a bar chart of 2010 death rates, a pie chart of pollution composition, and a heatmap. The implementation uses `d3.csv` to load the data and `Plotly.newPlot` to render each chart container.