It’s a commonly held belief: Sperm cells are like runners in an epic race, competing against each other for access…
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QUICK FACTS Name: Japanese quail (Coturnix japonica) Where it lives: Steppes and meadows in Asia, notably China, India, Japan, Korea…
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QUICK FACTS Name: Dwarf sperm whale (Kogia sima) Where it lives: Tropical and temperate waters around the world. What it…
Read More »Male fertility rates have been plummeting over the past half-century. An analysis from 1992 noted a steady decrease in sperm…
Read More »10 Children Conceived with Same Sperm Donor Develop Cancer — and the Man’s Sperm Was Used by at Least 67…
Read More »A sperm donor with a rare genetic mutation linked to cancer is sparking debate about regulation of the practice. In…
Read More »Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. The World Health Organization estimates that infertility impacts one in…
Read More »Sperm donor with rare genetic mutation fathered 67 children. Ten now have cancer, prompting calls for reform CNN Sperm from cancer-risk…
Read More »Sperm cells have a monumental task, but their days are numbered. From the moment they’re made in the testes to…
Read More »Wiggling Sperm Power a New Male Fertility Test A physics-based sperm-screening technique could offer a more accurate at-home test for…
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