I've gone through the classical and medieval periods of history, linking another nation to each period, and expanding a bit on histories of associated peoples in the process. I've also done the same for most of modern history up to the 1960s.
This time, I've also taken a look at the biography pages associated with each period. I noted that there were a few that I hadn't touched since I created them four years ago. That's an excessively long time to be waiting to get around to it, and I don't yet have a great deal to add to each person, but I'm getting closer.
A reader sent me a link to information to the Archimedes Palimpsest which was recovered and is being examined by scholars. If I were interested in the detailed parsing of Greek mathematical text (a fantasy which has occured to me at various times), I would love to follow it up more closely. For now, I'm just going to have to file it under "Interesting. Someday, maybe, if I live long enough, I might get around to that". But, seeing how long it's taken to get back around to Thomas Edison who has been in the Knowledge Base almost from the beginning, I'm not promising anything.