Hmm…‘One simple trick’ Paris used to reduce air pollution 40% ahead of the Olympics.
Is it cloud seeding? Tell me it's cloud seeding. Oh no, it's kicking out cars.
By a remarkable coincidence, Beijing also introduced restrictions on cars before the 2008 Olympics (banning odd/even number plates on alternate days) and achieved similar results. Still, correlation does not imply causation, so it was probably something else that caused it.
