Maybe I'm on to something

I just saw a link to this story on the NEHGS weekly online newsletter: http://www.bbc.com/news/world-us-canada-27668747 It's about a study/studies being done at 2 universities to take descendents' genes and use them to reverse engineer great grandma/grandpa's facial features. This is apparently different from the facial reconstruction using remaining bone fragments from old burial sites such as King Richard III's parking lot grave or the two sailors whose remains were found on the USS Monitor. I don't know how they would verify their results, how many generations back the technique would work, or what they do with family trees that intertwine instead of branching out. It's more of a teaser than a news article, but if I hear/see more I will post it here.