The human species is in grave reproductive danger, according to recent headlines. Some scientists say that sperm counts in men around the world have been plummeting, with Western men approaching total infertility by 2045. Far-right “Great Replacement” theorists, who fear that people of color are “replacing” the white population, have taken up the research with gusto.
This all stems from a report published in 2017 in the journal Human Reproduction Update that claims sperm counts among men in North America, Western Europe, Australia, and New Zealand have fallen by some 50 percent since the 1970s. In February of this year, an author on that paper, Shanna Swan, published a book titled