carbon oxides (COx)

CO (Carbon Monoxide)

A colorless, odorless gas produced by the incomplete combustion of fuels with a limited oxygen supply as in automobile engines. CO is poisonous if inhaled, entering the bloodstream through the lungs and forming carboxyhemoglobin, a compound that inhibits the blood's capacity to carry oxygen to organs and tissues. CO can impair exercise capacity, visual perception, manual dexterity and learning functions.

Air pollution in downtown Los Angeles

CO2 (Carbon Dioxide)

Carbon dioxide is the main greenhouse gas created by combustion, the so-called greenhouse effect, emitted primarily from human activity such as burning of fossil fuels to generate electricity and vehicles. Scientists believe these greenhouse gases are causing the earth's climate to change.