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Infinitely complex solutions to self inflicted and completely trivial issues, humans are amazing!

I think you may have missed the subtle joke in:

> electrostatic air cleaners, perhaps solar powered

AKA trees.

>.>

How would that work exactly, it's not like one tree produce pollen and the next suck it all up

That’s exactly what the post at the beginning implied. That female trees would attract the pollen

If only it wasn't impossible to design cities for streets to maintain tree cover to help air stay cooler near ground level, etc..