We only have estimates, not yet complaints. Such as: https://www.nature.com/articles/s41598-021-89909-7 https://www.nature.com/articles/s41598-021-89909-7 Tha

We only have estimates, not yet complaints. Such as: https://www.nature.com/articles/s41598-021-89909-7 https://www.nature.com/articles/s41598-021-89909-7 That was always the thinking of all kinds of pollution that they are insignificant, till it "suddenly" became a problem and "everyone" was surprised. Well, if you're convinced it's inevitable then it is.