Arctic 'dirty oil' ban for ships targets heavy fuel oil, aiming to prevent spills and reduce black carbon emissions.

Arctic 'dirty oil' ban for ships comes into force, targeting heavy fuel oil (HFO) which emits black carbon, speeding up ice and snow melting. Environmental groups argue the ban doesn't go far enough, as it has several loopholes allowing most ships to use the fuel until 2029. The ban aims to prevent HFO spills that could harm the region's sensitive environment and species.