This change can be witnessed in places like Atlanta, Georgia, Detroit, Michigan, and Dallas, Texas, said Leinberger, where once rundown downtowns are being revitalized by well-educated, young professionals who have no desire to live in a detached single family home typical of a suburbia where life is often centered around long commutes and cars.

CNN: Is America's suburban dream collapsing into a nightmare?

TOKYO, Japan (CNN) -- If you go to a single party in a fashionable part of Tokyo on any given day, you will see successful young professionals who love good food, wine and company.

CNN: Single, childless Japan emerging