Methane is a potent greenhouse gas. Could turning it into CO2 fight climate change?
Usually, choosing between the lesser of two evils is a dismal decision. But sometimes, it's an opportunity.
May 21, 2019
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Energy & Green Tech
Usually, choosing between the lesser of two evils is a dismal decision. But sometimes, it's an opportunity.
May 21, 2019
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4
Energy & Green Tech
Greenhouse gases such as carbon dioxide (CO2) and methane (CH4) are emitted into our atmosphere as waste products of current energy production activities. But imagine turning this waste carbon into biomass - a reliable, economical, ...
Apr 6, 2017
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Energy & Green Tech
Magali Delmas picks up her smartphone and touches the icon for her home thermostat. She is inside UCLA'S Institute of the Environment and Sustainability, where it is warm. But an icy wind is blowing outside, and she worries ...
Jul 25, 2016
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Energy & Green Tech
A switch to propane from diesel by a major Midwest bakery fleet showed promising results, including a significant displacement of petroleum, a drop in greenhouse gases and a fuel cost savings of seven cents per mile, according ...
Apr 22, 2016
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Gas is one of the three classical states of matter (the others being liquid and solid). Near absolute zero, a substance exists as a solid. As heat is added to this substance it melts into a liquid at its melting point (see phase change), boils into a gas at its boiling point, and if heated high enough would enter a plasma state in which the electrons are so energized that they leave their parent atoms from within the gas. A pure gas may be made up of individual atoms (e.g. a noble gas or atomic gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide). A gas mixture would contain a variety of pure gases much like the air. What distinguishes a gas from liquids and solids is the vast separation of the individual gas particles. This separation usually makes a colorless gas invisible to the human observer. The interaction of gas particles in the presence of electric and gravitational fields are considered negligible as indicated by the constant velocity vectors in the image.
The gaseous state of matter is found between the liquid and plasma states, the latter of which provides the upper temperature boundary for gases. Bounding the lower end of the temperature scale lie degenerative quantum gases which are gaining increased attention these days. High-density atomic gases super cooled to incredibly low temperatures are classified by their statistical behavior as either a Bose gas or a Fermi gas. For a comprehensive listing of these exotic states of matter see list of states of matter.
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