Advocates say now is the time to pursue lasting solutions for youth homelessness, a growing problem that may soon become unmanageable. That's according to Erin Kelly, Director of Homeless Youth and Young Adult Services for Waypoint, a private, nonprofit agency. A major study, Kelly says, estimates 14,000 to 15,000 young people are likely to experience some form of homelessness or housing instability in New Hampshire this year. Contributing factors include addiction, mental illness, and