Sir: For human beings, Almighty Allah has created uncountable facilities on earth but instead of utilizing it we are destroying it. For instance, greenhouse effect is a cycle to reduce the heat effects of sun rays on the earth to make it comfortable and it’s done by some automatic produced gases (moisture, carbon dioxide, ozone, methane and nitrous oxide) in the atmosphere are known as greenhouse gases. The enhancement of any gas can extremely destructive for green house process and human beings is destroying it by burning fossil fuels which is causing increase in carbon dioxide. Furthermore, CFCs that stands for cholorofluoro carbons which are effecting this greenhouse. These compounds are used in cooling devices like air conditioners, refrigerators and many more. Global warming is causing melting of glaciers in north and south pols. My suggestion to the best creature is that please think and ask yourself before burning fossil fuels or doing any nasty thing that are we doing the job of best creature? And try to finish using such materials that are made of CFCs compounds. MEER KHAN GHULAM QADIR Karachi