This visualization animates US COVID-19 case data from the New York Times, mapping cumulative cases over time as colored circles along a horizontal timeline. A sequential spectral color scale encodes case counts, with circle radius proportional to daily increases. The sketch.js file uses D3 v7 to load the CSV data, parse it, and render animated circles through an iterative drawing loop. The visualization demonstrates cumulative growth patterns from early January through August 2020, with color intensity shifting as case numbers escalate.