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Adults blame kids for everything. Google it and you'll think twice about swimming in a pool again :-D

Gave it up long ago!

It is fine though? Swimming pools use a complex chemical and physical filtration system.

every space sci-fi in the world presupposes that we'll do the same once our orbital lanes are packed densely.

Light pollution doesn't linger and spread over time. Once it stops being emitted, it's gone one second later.