Most ‘Climate Policies’ Do Not Bring Down Emissions, New Study Finds
Only a small percentage of climate policies instituted globally have actually resulted in any significant emissions reductions, according to a study published earlier in August in Science, a respected scientific…


Only a small percentage of climate policies instituted globally have actually resulted in any significant emissions reductions, according to a study published earlier in August in Science, a respected scientific publication.
The new study, titled “Climate policies that achieved major emission reductions: Global evidence from two decades,” used artificial intelligence to assess 1,500 different climate policies pursued across 41 nations between 1998 and 2022, aiming to determine which types of policies have prompted significant emissions cuts. The study’s analysis found that only 63 of these policies constituted “successful policy interventions,” meaning that just 4% of the measures evaluated in the study’s sample effectively reduced emissions.
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“Across four sectors, 41 countries, and 2 decades, we found 63 successful policy interventions with large effects that reduced total emissions between 0.6 and 1.8 of ,” the study states. Moreover, most of the emissions cuts observed in the study were the result of two or more policies having a combined effect.
“We have a lot of policies out there that have not led to large emission reductions, and more policies do not necessarily equate to better outcomes,” Nicholas Koch, the head of the policy evaluation lab at Germany’s Mercator Research Institute and one of the study’s authors,



