Wonkblog: The rise of singles will change how we live in cities

Over the last half-century in America, it's become acceptable, then increasingly common, then entirely unremarkable, to live alone. Women who once lived with their families until their wedding day now live alone. Men delaying marriage later into their 20s live alone. Divorcés, more common today than in 1950, live alone. And seniors who live longer now than ever before -- and who are less likely to spend those years in a retirement home -- increasingly live alone, too.