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 »

Inhalation of radon gas causes tens of thousands of lung cancer deaths around the world annually, reports the World Health Organization. Radon ranks only behind smoking as a major cause of lung cancer in the United State... More »

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Global warming is the process by which the Earth’s average atmospheric temperature increases over time. The Earth has experienced both global warming and cooling during its 4.5-billion-year history. However, the current ... 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 »

Natural gas is a fossil fuel composed of flammable gases, primarily methane, that formed from decaying organisms buried deep beneath the Earth's surface due to intense heat and pressure over thousands of years. It is one... More »

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Nonpolar molecules include hydrogen and oxygen gas, methane and gasoline. Alkynes are also considered nonpolar. Generally, nonpolar compounds are considered water insoluble and do not dissolve in water. More »

Sewer gas is harmful to human health because it contains methane gas, which contains a mixture of toxic gases. One of these is hydrogen sulfide, which can affect the functioning of the central nervous system, according t... More »

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