Abstract :
Many of us would enjoy lying back in the coziness of our home and indulge completely in the comfort of an open fire in the winter. Often, the availability of heated water for baths, showers and dishwashing even in the summer has become a basic necessity. Offices that keep lights and computers on when not in use are also a common scene in many places. Although these actions may seem minor, they are factors that can contribute to problems such as pollution, global warming and fossil fuel depletion.
