But this is still pretty interesting: Does living in the city age your brain?
"Kobe, Japan (CNN) -- There is a reason more than half the world's population lives in cities, with the number expected to grow. Cities have a lot to offer. Residents can walk to nearby shops and enjoy cultural attractions not available to those in more rural areas. Also, living in a city may make your commute to work much shorter.
Unfortunately, according to health officials from the World Health Organization, that convenience may come with a price -- higher levels of stress and a measurable impact on your brain.
The problem seems to be "attention," or more specifically, the lack of it. With so many different distractions -- from a flashing neon sign, to the cell phone conversation of a nearby passenger on a bus, a city dweller starts to practice something known as "controlled perception." That toggling back and forth between competing stimuli can be mentally exhausting."