What are the different systems of measurement and how are we able to convert between them?
How much of the total energy used to heat the earth and earth's buildings comes from commercial energy?
What are the advantages and disadvantages of using coal as a fuel source?
What are the advantages and disadvantages of using natural gas as an energy source?
What are the advantages and disadvantages of using conventional oil, oil from oil shale, and oil from tar sands to heat space and water, produce electricity, and propel vehicles?
What are the advantages and disadvantages of using conventional nuclear fission to create electricity?