Britannica Educational Publishing 
Fossil Fuels [PDF ebook] 

Accounting for more than 90 percent of the world’s energy supply, fossil fuels-coal, petroleum, and natural gas-are not an infinite resource. Formed by the lengthy decomposition of organic matter, fossil fuels are actually limited in availability. Still, nations across the globe are dependent upon the processing and utilization of these dwindling resources. Complete with maps and detailed diagrams, this volume examines the production and distribution of fossil fuels and their viability as a future energy source.