By shifting to alternative energy sources, economizing on energy use, and capturing and safely storing the carbon dioxide produced by fossil fuels, global society can limit its emissions of carbon dioxide to prudent levels at an estimated cost of under 1% of global income. The changeover to a sustainable energy system will not come quickly, and will require new kinds of electrical power plants, new kinds of automobiles, and “green buildings,” which economize on energy use.
通过转向替代性能源，节约能源使用以及捕捉并安全地储存由化石燃料产生的二氧化碳，世界就可以将二氧化碳的排放限制到合适的水准，而成本只有全球收入的1%不到。转向可持续的能源系统并不能一蹴而就，而且将会要求新型的发电厂、新型汽车以及节约能源使用的“绿色建筑”。