There are only seven years left for mankind. Bill McGuire, a famous British expert on natural disasters and a world-renowned environmental scientist, put forward an amazing point in his new book "Save the Earth in Seven Years": If human beings do not take immediate action to reduce greenhouse gas emissions in the atmosphere, then 20 15 will become a turning point in the fate of the earth. If the greenhouse gas emissions of the earth can't be controlled within seven years, then the earth will enter an irreversible vicious circle in July of 20 15, and human beings will be swallowed up by a series of natural disasters caused by climate warming! 20 15 is the turning point. Professor mcguire said, "If we have any chance to avoid dangerous climate warming, global greenhouse gas emissions must be reduced by 50% to 80% by 2050. To achieve this, greenhouse gas emissions must reach a stable state before 20 15, and then start to decline year by year. If mankind fails, then we will live in a greenhouse world with economic chaos, social collapse and environmental degradation. Humans will wage war for water instead of oil, and we will live in a chaotic world. The desert is expanding, the sea level is rising rapidly, typhoons are sweeping across the Pacific Ocean, and the Amazon jungle is beginning to disappear. In his new book, mcguire, the market leader of Doomsday Disaster, lists all kinds of fatal disaster scenarios that mankind will face in the future if greenhouse gas emissions cannot be effectively controlled. It is reported that the United Nations has listed 158 river basins around the world as potential sources of war conflicts. These rivers are located in East Africa, the Middle East and South Asia, and the governments of the countries where the rivers are located may not hesitate to trigger wars in the future in order to provide sufficient water for people, industry and agriculture. In his new book, Professor McGuire warns that if greenhouse gas emissions cannot be controlled, the Middle East may become the first region to trigger a water war. Mcguire warned: "In five years, water shortage will become a headache, and violent conflicts may follow. "