科学家预测,在以后的几十年中,由于大气中二氧化碳和其它产生“温室效应”的气体的增加,地球的温度将升高到史无前例的水平。温度的增加,降雨量规律的变化及海平面的上升所带来的问题将严重阻碍工业国和发展中国家的经济发展。例如,要维持正常的粮食生产,仅调整灌溉格局一项,全世界可能要投资近二千亿美元。据估计,全世界用于应付气候变化的费用达到经济总产值的3%。这也许会葬送经济增长的全部利润。由于工厂,交通运输工具,发电厂及 Scientists predict that in the coming decades, the temperature of the Earth will rise to unprecedented levels due to the increase of carbon dioxide in the atmosphere and other “greenhouse effect” gases. Increases in temperature, changes in the law of rainfall, and rising sea levels will seriously impede the economic development of industrial countries and developing countries. For example, to maintain normal food production and adjust the irrigation pattern alone, the world may have to invest nearly 200 billion U.S. dollars. It is estimated that the world’s cost for dealing with climate change reaches 3% of the total economic output. This may bury all profits from economic growth. Due to factories, transportation vehicles, power plants and