Makes pollution generation and handling a much greater focus of the game, as pollution is both much nastier to the environment, to your factory, and to you, much more likely to turn the natives against you, and much harder to ignore. Also adds new technologies and infrastructure for environmentally-conscious factory planners to avoid the worst of these problems.
Counted when a user downloads a mod release for the first time. Before Nov 2021 it counted everytime a user clicked the mods download button.
Counted when a user downloads a mod for the first time. Has no data before Dec 2022