To stay below the two-degree limit, the world’s governments must embrace a core concept: “deep decarbonization” of the world’s energy system. That means a decisive shift from carbon-emitting energy sources like coal, oil, and gas, toward wind, solar, nuclear, and hydroelectric power, as well as the adoption of carbon capture and storage technologies when fossil fuels continue to be used.
要想让升温幅度限制在2度以下，世界各国政府需要明白一个核心概念：世界能源体系的“深度去碳化”。这意味着一个决定性转变，从排碳能源资源（如煤炭、石油、天然气）转变为风能、太阳能、核能和水电，若要继续使用化石燃料，也要采取碳捕捉和储存技术。肮脏的高碳能源必须让位给清洁的低碳和零碳能源，并且所有能源的使用效率都必须提高。