The reason for this failure is a lack of investment, particularly in emerging market and developing countries outside China," said co-author Nicholas Stern, chair of the Grantham Research Institute on Climate Change and the Environment.

Source: https://gazette.com/news/us-world/climate-finance-in-the-spotlight-at-cop28-climate-talks/article_dea2fec3-cfe3-5a98-8f45-940a01da4539.html