Are compressed natural gas vehicles a clean solution for transport?

This review of the latest data on particle pollution from CNG cars, vans, buses and trucks dispels these claims and shows the technology emits high levels of toxic pollutants. More particularly, they emit large numbers of particles and ultrafine particles, which are associated with cancer, Alzheimer’s, and heart and respiratory diseases.The full report is in English. The executive summary is also available in Italian, Polish and Spanish.