Higher energy use is already changing the world's climate in dangerous ways. Furthermore, the strains of increased global populations, combined with income growth, are leading to rapid deforestation, depletion of fisheries, land degradation, and the loss of habitat and extinction of a vast number of animal and plant species.
能源使用的增加已经危险地改变了世界气候。而且，全球人口的增加与收入的增加相结合，还导致森林砍伐、渔业损耗、土地退化现象严重。另外，动植物的栖息地在减少，大量珍贵品种在消失。