The effects of the housing collapse are being felt acutely, daily, powerfully in Cleveland, Ohio. For a time, it led the nation in foreclosures, and now it's a city that lives with one out every 13 homes vacant. Alex Kotlowitz is a contributor to the New York Times magazine and author of the book There are No Children Here: The Story of Two Boys Growing Up in The Other America. He has a story in this weekend's magazine titled ?All Boarded Up,? describing how the next stage of the national foreclosure crisis has already come to Cleveland.