E-Mail IMAGE: A new study from the Harvard GenderSci Lab in the journal Human Fertility, "The Future of Sperm: A Biovariability Framework for Understanding Global Sperm Count Trends " questions the panic over... view more Credit: Harvard GenderSci Lab A new study from the Harvard GenderSci Lab in the journal Human Fertility, "The Future of Sperm: A Biovariability Framework for Understanding Global Sperm Count Trends" questions the panic over apparent trends of declining human sperm count. Recent studies have claimed that sperm counts among men globally, and especially from "Western" countries, are in decline, leading to apocalyptic claims about the possible extinction of the human species.