Unhealthy urban environments

Some people believe that living in a big city is becoming more and more unhealthier nowadays.
Urban environments by itself are a big concentration of cars, infrastructures, peoples and other
stuff, which can cause problems connected with human’s health.
Firstly, the most common issue is an emission, which has produced by cars and factories.
Inhaling that emission is a bad idea, because it can be dangerous for your health. Some of
scientific work proved the fact, that in some cases people, who live in a big cities, often suffer
from cancer and it is connected with air quality tidiness. …