Any change in the weather these days seems to be blamed on warming of the world caused by human activities – the “greenhouse effect”. But although human activities may be upsetting a natural balance, the greenhouse effect is very much a natural feature of the world, and without it we would not be here
THE EARTH is comfortably warm because it is surrounded by a blanket of air. “Comfortably warm” means that the average temperatures on our globe are in the range between 0°Celsius and 100°Celsius where water is liquid. We can see that the atmosphere of the Earth has…





