How #Swiss #tunnel technology is controlling pollution a continent away in Santiago de Chile in South America

Throughout South America, pollution from transport and machinery has been adding to greenhouse gas emissions while causing growing health issues. A Swiss programme based on technology developed for trans-Alpine tunnels has helped Chile become a leader in addressing vehicle smog.

https://www.swissinfo.ch/eng/black-carbon-filters_how-swiss-tunnel-technology-is-controlling-pollution-a-continent-away/45432716
#Switzerland #Swiss #tunnelling #technology