Energy: What About Tomorrow?

Shortages of oil and natural gas, rising costs of power, and world population growth have combined to stimulate an intensive search for alternative energy sources. Solar possibilities range from house units to vast power farms and even satellite power stations. Geothermal resources are seen as a great boon to nations poor in fossil fuel and sophisticated fusion research is going on in laboratories around the world. No one source will be sufficient to meet all our future needs, so every possibility must be explored.