The climate record shows that the global warming of 1°F observed over the last 100 years is not unusual. Global temperature changes of this magnitude have occurred frequently in the past and are a result of natural factors in climate change ut is it possible that the particular temperature increase observed in the last 100 years is the result of carbon dioxide produced by human activities? The scientific evidence clearly indicates that this is not the case ll climate studies agree that if the one-degree global warming was produced by an increase in carbon dioxide in the atmosphere, the additional CO2 first warms the atmosphere, and the warmed atmosphere, in turn, warms the earth’s surface. However, measurements of atmospheric temperatures made by instruments lofted in satellites and balloons show that no warming has occurred in the atmosphere in the last 50 years. This is just the period in which human made carbon dioxide has been pouring into the atmosphere and according to the climate studies, the resultant atmospheric warming should be clearly evident he absence of atmospheric warming proves that the warming of the earth’s surface observed in the last 100 years cannot be due to an increase in carbon dioxide in the atmosphere caused by human activities. The recent global warming must be the result of natural factors in climate change.