Abstract
Barack OBAMA, the candidate running for nomination by the Democratic Party said in a speech in April 2006, "All across the world, in every kind of environment and region known to man, increasingly dangerous weather patterns and devastating storms are abruptly putting an end to the long-running debate over whether or not climate change is real. Not only is it real, it's here, and its effects are giving rise to a frighteningly new global phenomenon, the man-made natural disaster". Global warming is a phenomenon mainly caused by mankind, but stopping it is impossible for several reasons. Firstly, the phenomenon is too engaged to be stopped. Secondly, it is possible that global warming is a natural phenomenon too, even if there is no doubt that mankind is the cause of an acceleration of the process. In that case, stopping global warming would be impossible for humans. And finally, it appears that the policies implemented to control global warming are not sufficient and/or ineffective.
