Every nuclear reactor on earth on one globe, with a timeline running from Obninsk in 1954 out to 2031 that you can drag through and watch the curve climb, flatten after Three Mile Island and Chernobyl, and flatten again after Fukushima. It reads 447 reactors across 34 countries and 402.9 GWe operating today, with 84 more under construction, and ranks the countries against each other at whatever year you stop.