Who’s on the Family Tree? Now It’s Complicated

Who’s on the Family Tree? Now It’s Complicated - NYTimes.com: Genealogists have long defined familial relations along bloodlines or marriage. But as the composition of families changes, so too has the notion of who gets a branch on the family tree. Some families now organize their family tree into two separate histories: genetic and emotional. Some schools, where charting family history has traditionally been a classroom project, are now skipping the exercise altogether.