Los Angels-A Panoramic View.

Los Angeles is the second-largest city in the United States, with an estimated population of 3.85 million people. Los Angeles is one of the cultural, economic, scientific and entertainment centers of the country. Due to the city's geography as well as the population's heavy reliance on automobiles as a major form of transportation, the city suffers from severe air pollution in the form of smog. The Los Angeles Basin and the San Fernando Valley hold in the fumes from automobiles, diesel trucks, shipping, and locomotive engines, as well as manufacturing and other sources.