05.07.2009

This smelly substance, a gas with the distinctive odor of rotten eggs, is produced as a byproduct of burning sulfur-containing fossil fuels such as coal and natural gas. This substance changes into highly corrosive sulfuric acid when exposed to water vapor suspended in the air, and when it falls back to earth as acid rain, it can cause significant damage to virtually everything in the environment. Most airborne sulfur dioxide is produced by coal-fired generating plants

Sustainability is a broad concept referring to the need to balance the satisfaction of near-term interests with the protection of the interests of future generations, including their interest to a safe and healthy environment. Sustainable energy is the ability to meet the energy needs of the current population without compromising the energy needs of future generations. Those that promote this concept often advocate renewable energy sources, energy efficiency as well as an energy policy that leads to a cleaner environment and safe reliable energy technologies

A “steam cracker” is a petrochemical plant that turns naphtha and light hydrocarbons into ethylene, propylene, and other chemical raw materials. These chemicals can be transported, via pipeline and other methods, to chemical and polymer facilities and converted into olefin-based products

Examination of a geological scenario to understand the geometry and special arrangements of the rocks

Gas can be in a gaseous state or a liquid state