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A modern city in the western world depends largely upon the generation and consumption of energy. We use wood and fossil fuels to supply our vast cities with energy but do not consider the environmental implications that are involved. We are depleting the earth of these fuels faster than they will be able to be formed and are also bringing great havoc to nature by causing global warming. The “Greenhouse Effect” is the term used …

…of the environment. This can be accomplished only by a dramatic change in the attitude of the human species. The human attack on the environment has been compared to the dramatic upheavals of the Earth in the geological past; whatever a society’s attitude may be towards continuous growth, humanity should recognise that this attack threatens human survival. We need to find alternative fuels that are efficient, easy to obtain, environmentally safe and economically feasible.