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Cake day: January 12th, 2026

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  • Thats a good point, not even turboprops are leaded if I remember right.

    Obviously it’d require a lot of study to definitively say the impact of the lead, but I’m convinced the impact wouldn’t be able to compare to natural levels in that atmospheric environment. Like we love our planes, but its still energetically really difficult for us to get them up there - but space rocks can have a hard time NOT burning up in our atmosphere. And lead is a larger than uniform part of our universe because its atomic stability, so odds are (IMO) atmospheres relatively lead-y, but have been for centuries.

    That and the difficulty creating hotspots in such a turbulent environment makes it required to increase the entire atmosphere’s lead content to increase any one area to dangerous levels.



  • Yeah but the jet stream takes care of any concerning concentrations of exhaust.

    Even under 10,000 ft the atmospheric dispersion is orders of magnitude above surface.

    The turbulence at the surface on a bad day can ‘lock out’ the upper atmosphere sometimes, which is extra dangerous for surface car exhaust - but is actually beneficial the higher your altitude vs ground.

    So in all ways the ways airplane fuel would expose someone to lead, isnt experienced by the general populace. (minus directly handling the fuel, may have concentrated lead get on someone’s hand/food, but thats another situation)


  • Atmospheric dispersion is usually actually concerning good not bad, so it should dilute across the globe fairly quickly.

    Air pollution usually becomes an issue when something like nuclear waste reaches the atmosphere, cause we ALL get to breathe in that nuclear waste.

    But honestly some (probably large) percentage of meteors are lead deposited right to the atmosphere, cause its so atomically stable nearly everything decays to it.

    So no matter what there’s some lead in the soup, and I can’t see jet fuel being a large contributer (to an already small amount)