Columnist Rochelle Riley writes about a study of youths who are too old for foster care homes. Conducted by WSU's Research Group on Homelessness and Poverty, the survey found that almost half the youths from the tri-county area who "aged out" in 2002 and 2003 were homeless at some point during the first three years on their own. In Michigan , most foster care youths stop receiving state aid at age 18. A state task force is studying how to improve transitions to life after the foster-home experience.