Global trends in climate change litigation: 2023 snapshot

This is the ninth edition in the Grantham Research Institute’s annual Global trends in climate change litigation snapshot series. Each report provides a synthesis of the latest developments and research in the climate change litigation field.1 By combining legal analysis with a sociolegal lens, the series provides readers with both the foundational knowledge and the updated understanding needed to assess the impact that fast-moving legal developments may have on the climate governance landscape. The numerical analysis in this 2026 report focuses primarily on cases filed and decided in the 2025 calendar year; we also provide commentary on significant developments in cases from the first five months of 2026.