A couple of days ago The Guardian’s Data Blog published data about the location and status of nuclear plants around the globe. I used their data to create a Google Map that shows a 20km Fukushima evacuation zone and a 30km Chernobyl exclusion zone around each active plant. Look at the map here.
Another interesting map was made by Robert Johnston. He collected data on worldwide nuclear test zones. Look at the data on his website or look at this map generated from Johnston’s Google Earth KML file.