According to this July 25, 2017,Scientific American article, https://www.scientificamerican.com/article/sperm-count-dropping-in-weste... ,
Sperm counts in men from America, Europe, Australia and New Zealand have dropped by more than 50 percent in less than 40 years, researchers said on Tuesday.
Brian Rood is an assistant professor of psychology at Augsburg College in Minneapolis.
After I transitioned I applied for a job there in the Department of Mathematics, but they said they had no openings at the time.
I like to contemplate, in breathless anticipation, the imminent onset of super-symmetry!