This is the third in a sequence of posts taken from my recent report: Why Did Environmentalism Become Partisan? Summary Rising partisanship did not make environmentalism more popular or politically effective. Instead, it saw flat or falling overall public opinion, fewer major legislative achievements, and fluctuating executive actions. Public Opinion...

This post presents the executive summary from Giving What We Can’s impact evaluation for 2025. At the end of this post we share links to more information, including the full report and...