According to a new article published in the Huffington Post, the worst cities in which to retire are found in the western and southern parts of the country. Experts suggest that this is due to many factors, but the most common are foreclosure rates, vacancy rates, high crime rates, public transit and air pollution levels. Grandparents.com named Las Vegas, St. Louis and Modesto, California as the top worst retirement locations. Atlanta and Little Rock also made the list. More here