The 2015 Paris Agreement to keep global warming well below 2°C above pre-industrial levels and aim towards limiting warming to 1.5°C marked a watershed in planetary governance, for two reasons. First, of course, it set an explicit, quantitative target for sustainability with strong support from science, in a clearer way than had ever been done before. Second, perhaps even more important, this target is structured in a way that it can be disaggregated across the sectors of society which will need to take action to achieve it. This includes not only the nations who agreed on the target in the first place, but also non-state actors, such as cities, regional governments and the private sector. We see the prospect for each component of society to ‘do their bit’ towards ameliorating climate change as a fundamentally important precedent for global governance. With the upcoming 2020 timelines for a number of the targets under the 2030 Agenda for Sustainable Development, as well as for the plans of a number of multilateral agreements, the world has a grand opportunity to replicate this concept of ‘science-based targets’.

中文翻译：

---

定义“基于科学的目标”

2015 年《巴黎协定》将全球变暖控制在比工业化前水平远低于 2°C 并旨在将升温限制在 1.5°C 的目标，这标志着地球治理的分水岭，原因有二。首先，当然，它在科学的大力支持下，以前所未有的清晰方式为可持续性设定了明确的量化目标。其次，也许更重要的是，该目标的结构方式可以将其分解到需要采取行动来实现它的社会各部门。这不仅包括最初就目标达成一致的国家，还包括非国家行为者，例如城市、地区政府和私营部门。我们认为，社会的每个组成部分都可以为改善气候变化“尽自己的一份力量”，这是全球治理的一个根本重要的先例。随着 2030 年可持续发展议程下的一些目标以及一些多边协议计划的 2020 年时间表即将到来，世界有一个很好的机会来复制“基于科学的目标”的概念。