Have you ever been working on a research project and reached a dead end in your research? Well, if your research has anything to do with families, look no further than the Why Do I Love These People? Factbook created by Po Bronson.
I'll admit, besides the site's title, this post sounds boring, but the site is truly invaluable. Almost every tidbit on family life can be found. If you're patient enough to mine the data, you'll be able to find something interesting.
Like for instance, did you know that in 1900 the most common household size was greater than 7, but today it's 2? Or that because of rising life expectancies, you're today more likely than ever to reach your 40th wedding anniversary? Search around a bit and if you find something fun, leave a comment.