Pollutionwatch: exposing the threat of ultrafine particles

Campaigners say regulations are overlooking the health impacts of these tiny toxic materialsMore than 30 of Europe's air pollution and health experts have teamed up with clean air campaigners to highlight a pollutant that is being overlooked in environmental regulations.The health impacts of air pollution have been linked to the mass of particles in the air around the world, but by only weighing them we miss the tiny, ultrafine particles, less than 100 nanometres across. They have little mass but are very numerous. Continue reading...