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1 Zero-Emissions Vehicles: A Half-Truth/Vehiculos Emision Cero: Una Verdad a Medias/Veiculos Emissao Zero Uma Meia Verdade (Ensayo) - Interciencia
Auteur : Interciencia
Genre : Reference
The main source of atmospheric pollution in all cities is represented by motor vehicles. These consume mostly gasoline and diesel fuel, whose combustion emits into the atmosphere contaminating substances that affect the health of urban populations. The emissions' reduction in order to ameliorate air quality is a priority among urban authorities, and this is prompting the implementation of zero-emissions vehicles. Vehicles fed by fossil fuels contribute with ~25% of the increase in greenhouse gases, which are responsible for global warming. Of the fossil fuels used in vehicles, the least contaminant, both at urban and at worldwide levels, is natural gas. The vehicles utilizing natural gas emit ~20% less carbon dioxide than gasoline vehicles; however, this can revert when considering the possible non-burnt methane losses (Interciencia 18: 285-286, 1993). With the goal of reducing oil de
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