Fossil fuels, which exist in nature in form of coal, natural gas and crude oil (petroleum), are used as the primary source of energy. Fossil fuels consist of carbon and variable amounts of hydrogen and other elements. They are either burned directly, or converted into a variety of fuels for different uses. Automobiles, trucks, airplanes, home heating furnaces, many types of electric power plants all use fossil fuels and all produce carbon dioxide that, together with water, are primary products of their combustion. In most cases, the carbon dioxide is released into the atmosphere.

In typical automobile application, one kilogram of fuel produces, after combustion, 3 kg of CO2 (from 2.8 kg for biofuel to 3.2 kg for diesel). This translates to 2.5 kg CO2 per liter, (21 pounds per US gallon) of fuel. A typical automobile with 32 miles-per-gallon (5.1 liters per 100 km) fuel consumption releases to the atmosphere 160 grams of CO2 per kilometer, or over 100 kg in a a trip of 640 km.

Strataclear™ reduces the amount of CO2 emitted by capturing it on-board the vehicle using a special absorber. The solid absorber is contained in cartridges and does not change its physical form after absorbing CO2 from the raw exhaust. The cartridge can be replaced at the gas station; if it is not replaced, the spent cartridge does not interfere with the engine performance and can be carried indefinitely or until next replacement opportunity.