Compare that CNG is a better fuel than wood
Answers
Compressed natural gas is a clean-burning fuel. It is actually the cleanest of all fossil fuels. Since natural gas is composed mainly of methane, burning it produces carbon dioxide and water vapor. These are the same compounds we exhale when we breathe. Meanwhile, petroleum produces higher carbon emissions, nitrogen oxides and sulfur dioxide. Burning fuel oil also produces ash particulates that worsen pollution.
Combustion of natural gas releases very small amounts of these compounds. For instance, carbon monoxide emission is reduced by about 80% in CNG-powered cars compared to gasoline-powered vehicles. CNG also produces 45% less hydrocarbons than gasoline. And although natural gas also produces greenhouse gases, it is considerably reduced compared to gasoline or diesel. This helps reduce the harmful effects of greenhouse gases to the environment particularly through global warming.