It all depends on filtration, we’ve had very very efficient filters for particulate matter for at least 20 years now, like the DPF filters in diesel trucks and pickups.
But the funny thing is getting banned for just linking a study on climate in r/climate. Because libs are pro-fracking now.
A rapid collapse of Ukrainian troops would be good if Ukraine was allowed to negotiate and if Putin didn’t (for good reason) believe that he is a in a good position now.
The US killing that ceasefire deal at the very start of the war was terrible for Ukraine. Now the government is hunting down old people and disabled people to be cannon fodder on the front lines. And if the war somehow ends, the US will own 100% of the remaining Ukrainian territory and industry.