At some indefinite time in the near future, the last drop of oil, lump of coal or wisp of natural gas will be collected from the earth. The eventual depletion of fossil fuels that hitherto proved so reliable has left us with no choice but to prepare for a new age of energy synthesis. Most certainly, human demand for energy will not decrease or plateau but surge as world population grows to nine billion over the next 50 years. By the year 2020, world energy consumption is projected to show a linear increase of 50 percent.