Methane gas, also known as marsh gas, is a colorless and odorless gas that is widely available in nature. It is the main component of natural gas and firedamp in coal mines. It is also a product of the anaerobic bacteria... More »

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The majority of methane gas emissions on Earth come from human activities related to coal mining, petroleum, natural gas systems, landfills, the raising of livestock and fermentation. Methane gas also comes from natural ... More »

Methane gas is not considered dangerous to humans by inhalation. Exposure to methane gas in air with low oxygen levels may cause dizziness, headaches and a feeling of fatigue with no lethal effects. More »

An organic chemical is any molecule with at least one carbon atom forming its base, and a few examples of organic molecules include living matter such as the DNA of plants and animals, nonliving naturally occuring matter... More »

Methane hydrate is crystallized water containing trapped methane which is found in the outer regions of space and deep in the ocean floor. It is represented by the chemical formula (CH4)4(H2O)23. More »

Inhaling propane gas has different symptoms depending on how much of the gas is inhaled. Respiratory protection is not needed while working with limited amounts of propane gas. More »

The U.S. Environmental Protection Agency says that the average level of carbon monoxide in a home without a gas stove is between 0.5 and five parts per million. The level of carbon monoxide near a properly adjusted gas s... More »