I remember flying into Denver in the winter and seeing the inversion of just awful brown haze.
I cried for my lungs on that trip.
I cried for my lungs on that trip.
The sooner we can transition to EVs, the better.
Later edit: this EPA paper from 25 years ago [3] says "Vehicle exhaust was the largest PM 2.5 carbon contributor, constituting ~85% of PM 2.5 carbon at sites in the Denver metropolitan area".
[0] https://www.bizjournals.com/denver/news/2017/10/30/here-are-...
[1] https://www.denverpost.com/2020/01/19/colorado-air-pollution...
[2] https://publications.iarc.fr/_publications/media/download/37...
[3] https://www.epa.gov/sites/default/files/2020-10/documents/nf...
AusGov in their infinite wisdom built this primary school right on top of one of the busiest Melbourne streets for east-west through traffic, with long periods of bumper-to-bumper including the heavy trucks which are the worst. (You'd think cars in Aus have bad standards, but then there's the trucks.)
I'm willing to bet no-one even cared, as evidenced by the complete lack of air purifiers in the classrooms.