With little fanfare, the European Union has launched a huge climate experiment. On October 1, the EU kicked off the initial phase of a Europe-wide tax on carbon in imported goods. This marks the first time a carbon border tax has been tried at this scale anywhere in the world. Europe’s experiment could have ripple effects across the entire globe, pushing high-emitting industries to clean up their production and incentivizing other countries to launch their own carbon taxes. It may well end up being the most important climate policy you have never heard of.
“This is an excellent example of wild ambition on the regulatory front,” says Emily Lydgate, a