The book starts with an introduction to energy systems (Chapter 1) and describes
the various forms of energy sources: natural gas, petroleum, coal, biomass, other
renewables and nuclear. Their distribution is discussed in order to emphasize the uneven
availability and finiteness of some of these resources. Impact on the environment
is also included along with an introduction to the supply chain and life cycle analyses
in order to emphasize the holistic approach required for sustainability.