America's dirtiest cities have been identified in a study that ranked cities across the U.S. based on four categories: pollution, living conditions, infrastructure, and consumer satisfaction.

According to a list compiled by LawnStarter, the dirtiest city in all of Pennsylvania is Reading. This city also ranked among the dirtiest cities in the entire country (3). Here's what LawnStarter ...

When asked which is the dirtiest country in the world, people guessed it is India, which is incorrect. Read to find out the ...