There has been no observable evidence as yet that global warming is taking place. Most of the scientists have agreed that the temperatures have not risen. According to 1922 Gall up poll of members of the American Geophysical Union and the American Meteorologist society (the professional societies whose members are most likely involved in climate research), thirty three percent said that insufficient information existed to tell, and forty nine percent believed no global warming had taken place (Jones 7). Over the years scientific studies hav

Scientists don’t yet and may never - have enough information and understanding to predict global warming and its effects.

about two degrees over the same hundred year period. But as seen, the temperature has increased by only half of that amount. This means that the models have already exaggerated the green house effect by a factor of two (Roleff 27).

Over the past years there has been no observable evidence that global warming is taking place. The scientific methods used cannot predict weather for a very long period.

The calamity theorists say that human-caused increase in carbon dioxide has raised temperature since the 1800s, but temperature changes have not been as predicted by the scientists. As already mentioned above most of the past century’s warming took place well before the rise in carbon dioxide concentration. Further more the warming trend since 1976 has been just opposite to what the models had predicted. The opponents also claim that carbon dioxide is the main absorber of infrared radiation how ever the role of carbon dioxide in raising the temperature is far less than stated. The main green house absorbers of infrared radiation are water vapours and clouds. According to Mcdonald etal if all of the green house gases except water vapours, were to suddenly disappear, �

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