Left holding their kids' babies

The Seattle Post-Intelligencer has a story on a big new trend.Grandparents raising their grandchildren:

This so-called "kinship care" is the largely unseen fallout from a confluence of social problems -- parental drug addiction, incarceration, mental illness and, more recently, military service -- that have left about 2.3 million children in the United States raised by their relatives, mainly grandparents.