Global warming is a natural phenomenon that has resulted in continued increase in temperatures of land masses, water bodies, and atmosphere on earth. This phenomenon has been proved to occur at a rapid rate and would result in negative effects to humanity, environment, and social systems. There is however scepticism in the cause of global warming. One opinion is that it is human induced while the other is that it is just a consequence of climatic change. The paper analyses two opinions bringing out their similarity and differences.