Very convenient this cannot be verified for 15 - 20 years.
Africa has the highest fertility rates on the planet.
So this has not happened in the last 15-20 years.
Our analysis techniques are so good today, we can find chemicals in parts per 10's of billions.
Notice the article does not tell us how much was found.
It is difficult to believe an incredibly tiny amount will have a delayed effect, 15-20 years down the pike.
This does not pass the smell test.
Let us not forget what happened a few years ago with Big Pharma drugs :"DES" , or even "Thalidomide" .
Both of these medications resulted in infertility, or mal-formed fetus at birth.
The results of taking these 'approved medications' wasn't known until birth (Thalidomide),
or in the case of DES, until the young adult reached fertility, approximately 15 - 20 years later.
You've got the elephant by the wrong body part, mark.
It's not that the effect is *delayed* 15 years.
It's that it'll take 15 years of no kids, before they can be presumed sterile, otherwise, "well, maybe they were just putting kids off a couple of years". Which isn't so believable in a place as fecund as Africa, for 15 straight years; at which point
a) sterility becomes the default explanation
b) it's FAR too late to do anything about it.