> Truck traffic in LA is by far the problem Any citation on that? The article itself says the peak of pollution isn't as high, just the longevity. The articl

> Truck traffic in LA is by far the problem Any citation on that? The article itself says the peak of pollution isn't as high, just the longevity. The article also mentions climate change modifying weather patterns which could be a contributor. As someone who lived in LA you're always preying for rain to wash out ash or smog from nearby fires (which seem more common) or pollution and precipitation has been rarer over the past few years. No doubt reducing pollution (and trucks have been a huge contributor) will help, but since you mentioned Long Beach, boats have very few regulations and burn giant amounts of the lowest-quality fuel. An addition, a bunch of recent studies I've seen over the past few years show that up to 30% of the air pollution on the west coast comes from Asia. It just seems like something that should be addressed on multiple fronts and with things objectively getting worse, every bit helps.