Do hybrid cars cause pollution?
In big cities where people are packed close together, streets and roads are twisted and traffic jams are inescapable during rush hours, smoggy skies can be a persistent problem. A muggy haze often builds up around most metropolitan areas, especially during the hot summer months, posing health risks for citizens. Smog may give skylines their beautiful, colored sunrises and sunsets, but it also highlights a deeper problem that some areas have with pollution. Although smog is formed by several different sources, including power plants, industrial processes and various chemicals, one of the main causes of smog is vehicle emissions. The exhaust coming out of our cars’ tailpipes, which consists of gases such as nitrous oxides, floats up into the atmosphere. When these gases combine with volatile organic compounds, smog forms. And smog in cities is just a small part of the bigger problem of global warming — cars in the Unit
