Pollutionwatch: the unknown threat from ultrafine particles

The science on UFPs' health impacts has been slow to evolve, and the WHO is calling for more researchThe World Health Organization has called on governments to undertake more long-term measurements of ultrafine particles in the air.The average cubic centimetre of UK city air contains about 12,000 ultrafine particles (UFPs), and close to busy roads the average is about 30,000. Continue reading...