I like the idea of revising De humani corporis fabrica. The page could certainly use formatting and you could add images from the OU HSCI Collection's image database.
The challenge working on the Greek mathematics page will be not duplicating information already present on other sites. You wouldn't want to add extensive information about Ptolemy for example that was already present on his page.
The Paris Observatory would be a good project. The information on the page is thin and I'm sure there's plenty written about it. The one thing you would want to check is how many of those sources are in English. If you are fluent in French or interested in working on your French this would be a great project. The French page is much better developed, so a good starting point would just be translating it into English and expanding from there. Kirwanfan (talk) 16:01, 18 September 2013 (UTC)