Book excerpt: In our challenging economy, family members are joining forces in record numbers—recent college grads (80% in 2009) return home, parents move in with their adult children, and adult children (and grandchildren) return to live with parents. Under One Roof Again (Lyons Press) squarely addresses the inevitable issues—from money matters to dating, from finding physical space to protecting emotional space—offering solid advice for avoiding pitfalls and building stronger family ties.