One of my earliest memories (fuzzy though it is; I was very young) was ash falling from the sky while out at a San Francisco park. The date? October 20, 1991--the day the devastating Oakland Hills fire tore through around 3,000 structures and killed 25 in the Berkeley Hills.
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https://www.thelancet.com/journals/lanplh/article/PIIS2542-5196(24)00117-7/fulltext
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