The actions that are needed are difficult to introduce, because they go to the heart of the world’s use of energy, particularly its use of fossil fuels (coal, oil, and gas), which, when burned, release carbon dioxide – the key source of rising greenhouse gases – into the atmosphere.
Las acciones necesarias son difíciles de introducir, porque afectan a la esencia del uso mundial de la energía, en particular el uso de combustibles fósiles (carbón, petróleo y gas), que, al quemar, despiden dióxido de carbono –la causa fundamental de los gases de invernadero– a la atmósfera.