Natural Gas is a gas consisting primarily of methane, typically with 0-20% of other hydrocarbons. Natural gas is created in two primary ways. Biogenic mechanisms create natural gas by methanogenic organisms. This natural gas can be plentiful in landfills and is often harvested to be used for fuel. Thermogenic gas is created inside the earth at great temperature and pressure from buried organic material, many oil rigs capture or burn off natural gas created around oil deposits.
Advantages of Natural Gas
In some sense, natural gas can be a renewable resource. In places like landfills it is created from the degradable matter in trash. A major plus of natural gas is that it can be efficiently and safely stored. Like petroleum, it is a fossil fuel in the thermogenic sense, however it is considered to be more envrionmentally friendly due to its low emissions after burning (you can burn natural gas in your house with no adverse effects but you can't run a car indoors without dying!). It emits 60-90% less smog-producing pollutants. One of the most notable facts about natural gas is that most of the natural reserves of natural gas field are underutilized.
Disadvantages of Natural Gas
Like other fossil fuels, natural gas still does create greenhouse gas emissions. In the sense of large scale use, gas from landfills would not be able to meet demand, and it would therefore be relying on the non-renewable forms of gas.
Natural gas is highly volatile and can be dangerous is handled or transported carelessly. True natural gas is colorless, ordorless, and tasteless, which makes its leak detection very difficult. Luckily, gas companies add the sulfuric like odor that accompanies natural gas in our homes.