1. National Oceanic and Atmospheric Administration (NOAA). Broken record: atmospheric carbon dioxide levels jump again. NOAA https://www.noaa.gov/news-release/broken-record-atmospheric-carbon-dioxide-levels-jump-again (2023).
2. United Nations. Paris Agreement to the United Nations Framework Convention on Climate Change (United Nations, 2015).
3. United Nations. Kyoto Protocol to the United Nations Framework Convention on Climate Change (United Nations, 1997).
4. European Commission. Proposal for a Regulation of the European Parliament and of the Council Establishing the Framework for Achieving Climate Neutrality and Amending Regulation (EU) 2018/1999 (European Climate Law) (European Commission, 2020).
5. Smalley, R. E. Future global energy prosperity: the terawatt challenge. MRS Bull. 30, 412–417 (2005). This study and the next one discuss the magnitude of the challenges with respect to the energy transition.