Blog.

A 3D folder gallery in 15 KB of vanilla JavaScript. One SVG path, two planes, and some depth math - the three details that make a div read as a folder.

Summer ridership is 19x winter. Mapping 204K Citi Bike trips across Jersey City and Hoboken to see how station networks expand, contract, and rewire with the seasons.

4.8 million NYC 311 noise complaints, a decade of data, and the year that broke the baseline - plus the five ZIP codes doing most of the complaining.