This example summarizes the Nuclear Explosions Dataset, which contains records of nuclear explosions from 1945 to 1998. It displays a text output showing the dataset’s size in kilobytes, the number of rows, and the number of columns. The code uses the D3.js library (version 5) to fetch the CSV data from a GitHub Gist via `d3.csv`, then formats it with `d3.csvFormat` to calculate its size. The results are rendered into an HTML `<pre>` element, providing a quick overview of the dataset’s structure.