A wealth of evidence: 85,000 individual studies about climate policy

Research on climate policy is growing exponentially. Of the approximately 85,000 individual studies ever published on policy instruments for mitigating global heating, a good quarter are from 2020 or later. A study using machine learning methods now shows how this vast knowledge is distributed -- by instrument, country, sector and policy level -- and identifies research gaps. A corresponding web tool, the 'living systematic map', will help to guide science and policy. It will be continuously updated to reflect the current state of research.