The study of the evolution of human life over the centuries indicates that the type of life and livelihoods, physiological and physical characteristics, types of settlements and the degree of dependence on them ... have been different in various fields of the planet. Without bias and without geographic force, one cannot deny the role of natural and climatic factors in life. Therefore, any change in these factors can transform various aspects of human life.
Although it is difficult to make a definitive statement about climate changes because of the complexity of the various factors that confront the Aerial, Aquarius, Ice and Biosphere systems of the Plant, but the consensus among scientists based on numerous studies shows the undeniable role of human being along with environmental factors in the global warming process. However, the final judgment on the role of these factors is not possible considering the information available today. A problem that will be less significant in future owing to current progress.
In a general division, meteorologists and climate scientists can be classified into four categories.
1. Studies in relation to the proof of the Earth's trend of change and reduction of existing CO2; in this regard, comparison of statistics and information on meteorology, examination of past bio-climatic records, tree growth rings assessment, study on glaciers and surface water of the oceans and so on.
2- Investigating the factors affecting climate change; cases such as studying the effects of positive and negative interaction, aerosols, airborne particles, solar spots and their cycles, volcanic explosions, effects of greenhouse gases and ... can be noted.
3. Forecasting future changes using climate models; scientists' efforts to predict the future climate using the general circulation model, energy budget model, radiation transfer model, etc. can be mentioned.
4. Synthesis of the study of climate change and application of these studies in order to adapt human life and activities to new conditions.
With this attitude, the first three categories of studies together can be considered as a tool for more accurate and proportionate synthesis. In this paper, we try to identify the factors influencing these changes and predict the future conditions by demonstrating the process of climate change through mentioning examples. Clearly, the proposed solutions are mere suggestions and can become much broader.