According to the World Health Organization (WHO), in 2021, air pollution is responsible for more than 7 million deaths per year in the world, attributable to cardiovascular problems, respiratory or cancers.
Air pollution represents:
- nearly 1 in 6 deaths on the planet
- a reduction in life expectancy of 3 years on average in the world
- the second cause of avoidable mortality in France
The number of premature deaths related to fine particle PM2.5 air pollution is estimated between 40,000, according to Santé publique France, and 97,000 per year, according to a study published in February 2021 by Harvard University researchers in the journal Environmental Research.
PARTICULATE MATTER PM10 AND PM2,5 WHAT ARE THEY?
Suspended particles (noted “PM” for “Particulate Matter”) are generally fine solid and/or liquid particles carried by the air.
PM10 are particles with a diameter of less than 10 µm. They mainly cause respiratory health problems.
PM2.5, the fine fraction with diameter smaller than 2.5 µm, cause an alteration of cardiovascular health and cancers.
They have been increasing rapidly for two centuries, more particularly over the last 20 years, and have a strong impact on human health.
PM come mainly from the combustion of fuels in various sectors, including transport, energy, households (wood heating), industries and agriculture.
They also come from natural phenomena such as volcanic eruptions, forest fires, desert sands…