http://www.statista.com/chart/10439/sperm-counts-of-western-men-halved-in-38-years/
I think it is global warming and rising semen levels.
Although it could be trans not being as fertile.
Or alien abductions and sperm harvesting.
Any other hypotheses?
"Commenting on the decline, lead author of the study, Hagai Levine, said "I think this is another signal that something is wrong with the globe and that we need to do something about it" adding: "I think it’s a crisis, that we better tackle now, before it may reach a tipping point which may not be reversible”.
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