It occurred to me today that it might be possible to construct a huge historical timeline by gathering articles on dated historical events from Wikipedia, or from all over the Web using Google. The number of pages, number of links, or amount of text written about a particular event could be used as a rough indicator of its significance, to help determine which events should be shown for a given zoom level. Perhaps the events could be laid out vertically in time and horizontally by longitude. Or maybe it could just be a timeline of the lifespans of famous people. It could make a fascinating information visualization project.