An assessment of climate policy measures over two decades found that many have failed to achieve the necessary reductions in emissions

This study, published in the journal Science, provides a detailed analysis of the impact of a wide range of climate policy measures implemented over the past two decades. The findings reveal a sobering reality: many policy measures have failed to achieve the necessary scale of emissions reductions.

Only 63 cases of successful climate policies were identified, each leading to an average emission reduction of 19 %. A key characteristic of these successful cases is the inclusion of tax and price incentives in well-designed policy mixes. (Potsdam Institute for Climate Impact Research, more at phys.org)