The country is turning grey. Recent census projections show within 20 years a quarter of the population will be over 65. That population shift requires numerous changes for cities and counties; including housing, transportation and heath care. While those three areas may seem the most critical, many seniors say they're looking for independent living with plenty to do. And that's become a challenge for the city of Sioux Falls, South Dakota. Mainstreet radio's Cara Hetland reports: