An analysis of 1500 climate policies in 41 countries has found that a slim minority have led to a significant reduction in carbon emissions, with most policies being too specifically targeted to make a substantial difference
The vast majority of climate policies fail to significantly reduce emissions and so make little difference to stopping climate change, suggesting that governments must work much harder to identify ways to actually shift the needle.at the Mercator Research Institute on Global Commons and Climate Change in Berlin and his colleagues discovered this by assessing the impact of 1500 climate policies put into force between 1998 and 2022, covering 41 countries across six continents.
While matching policy shifts to emission changes isn’t an exact science, the team was able to attribute 63 of these breaks to one or more policy interventions within a two-year interval around the break, in order to allow for lagged or anticipated effects. “The key value in the paper is in identifying those clean breaks in emissions in specific sectors and countries,” saysat the University of Manchester, UK. He highlights that the OECD database of policy changes has some limitations because the government documents from which it pulls its content aren’t consistently reported across the world, but says it is the best available for the purposes of this study.
“It’s important not to overinterpret the headline result that only a few policies can be tied to emissions reductions,” saysat Imperial College London, UK, who points out that smaller emissions cuts not picked up by the team’s method may combine to make big differences.
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