Interesting. Very small concentrations of the chemical would have to sterilize practically everyone they contacted - else it would just cause humanity to very rapidly evolve resistance, or maybe kill off the developed world.
Reminds me of the decline in testosterone levels over the past couple decades, which might be due to endocrine-disrupting compounds in the water supply and in plastics and food, but which hasn't been enough to sterilize much of the population.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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