Life of all living beings is dependent on heat and light energy. Also, all types of work need energy. This moot subject has been dealt extensively by the author so as to help the young minds grasp it quickly and easily.

Topics discussed include:

*Energy.
*Solar energy.
*Wind generator.
*Hydro-electric power.
*Geothermal power.
*Coal.
*Mineral oil & petroleum.
*Fuel gases.
*Nuclear Energy.
*Nuclear Reactors.