We live in a big world with a lot of people. With global population racing upwards of 6.8 billion and environmental issues taking the lime light, overpopulation is a growing concern. Even though no city in the United States ranks among the ten most populated cities in the world, it is the number one contributor of carbon emissions. (Just something to ponder …) Although these cities may need a lesson in population control, they make up for it with rich culture and picturesque history.
