A heatmap visualizes earthquake magnitudes across different countries and months, with each cell color-coded to indicate impact level, where pink represents high magnitude and blue represents low magnitude. The visualization also includes a legend and tooltip that displays country, month, and magnitude details when hovering over a cell. Built with p5.js, the code loads earthquake data from a CSV file using `loadTable()` and renders rectangles via the Canvas API, using color interpolation based on magnitude values to encode severity.