Our family's histories live on through us. We can all learn from the past. These lessons have the ability to fuel -- and to heal -- our futures.

It's difficult to know how this will play out, but it's almost certainly going to affect the way future generations -- and probably current generations -- view their lives and role in history. It will still be the case 500 years hence that almost all of the people who ever lived are dead, but it will probably not be the case that almost all of them are forgotten.

If you had an ancestor known simply as "the Swede," wouldn't you want to know more about him?

Researchers at the University of Waterloo suggest that prehistoric people were just as worried about STIs as we are now, leading to more desire for monogamous relationships.