Diesel cars generate even MORE pollution than first feared
Source: Daily Mail
Diesel driven cars, lorries and buses
churn out far more air pollution than standard testing procedures suggest, leading to many thousands of unreported deaths, scientists claim.
The excess emissions of harmful nitrogen oxide (NOx) exhaust gases can be linked to 38,000 premature deaths worldwide, according to the new research.
This is in addition to the World Health Organisation's estimate of 3.7 million deaths caused by outdoor air pollution.
NOx can damage lung tissue but also reacts with chemicals in the atmosphere to produce ground-level ozone and ultra-fine particles, both of which are harmful.
Ozone irritates the airways and aggravates lung diseases such as asthma and bronchitis, while inhaling fine particles is strongly linked to heart and artery disease.
The study, published in the journal Nature, found that diesel vehicles around the world produced 4.5 million tons more NOx than they should do under international emission standards.