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Re:The Disappearance of the Ashtray by dredmorbius on Wednesday January 25, 2023 @10:48AM (#34519669)
There was some commercial air travel prior to the ... 1980s ... but it was niche. Prior to 1960 was effectively nil.

Really, widespread air travel is that recent:

<https://transportgeography.org/contents/chapter5/air-transpo...>

1980: ~1,000 billion passenger/km.

2019: ~8,500 billion passenger/km.

Global population's increased, but by less than 2x.

If you go back to 1960, the chart is stuck to the floor.

I've had a call out for further stats with no responses yet:

<https://news.ycombinator.com/item?id=34499787>

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