A world map using the Robinson projection displays the locations and relative severity of terrorist suicide attacks from 1970 onward, with data points sized by the number of casualties. The visualization is rendered on an HTML5 canvas, using a collection of JavaScript libraries including D3.js, TopoJSON, RBush, and a custom projection library (spam.js) to handle map data from Natural Earth and attack statistics from the Global Terrorism Database. The code defines specific map elements—land, countries, and roads—as data layers, each with custom painting and interaction logic, and calculates the radius of each attack marker based on its fatality count using a square-root scale.