High School Earth, Space, and Geophysical Curriculum Essentials May 2009 9. Boulder Valley School District High School Earth, Space, and Geophysical. Science Curriculum Essentials Document. Enduring Understandings. are the big ideas central to a content area that have lasting value beyond the classroom and.
See also: Coal gasification and Coal seam gas. Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system. Town gas is a more general term referring to manufactured gaseous fuels produced for sale to consumers and municipalities.
Natural gas â less damaging to our climate than coal in the long term â is an important fuel source as we work toward a cleaner energy future. However, if produced irresponsibly, it creates serious environmental and health risks, and wastes a valuable energy resource. We're working to make sure oil and gas are produced as safely as possible.