The most important challenge is to reduce, and eventually nearly eliminate, carbon dioxide emissions from burning fossil fuels such as oil, natural gas, and coal. These fuels are at the core of the modern world economy, supplying around four-fifths of the world’s commercial energy.
最为重要的挑战就是减少并最终接近消除燃烧矿物燃料例如石油、天然气以及煤炭等排放的二氧化碳。这些燃料居于现代世界经济的核心，为整个世界提供大约五分之四的商业能源。可以通过转向可再生能源形式或者降低使用矿物燃料排放来消除这些排放。