[Editorial] In desperate need of systems change

It is customary at the end of each year for The Lancet Planetary Health editorial to summarise global environmental change progress and developments. But as 2025 draws to a close, it seems that we could, with minimal editing, simply copy and paste editorial summaries from previous years. That is a facetious statement; of course, there have been positive developments, grinding progress, and wins on some key issues, for example the acceleration in green electricity capacity, the inclusion of health in key climate negotiations, and success in climate change litigation.