Male fertility rates have been plummeting over the past half-century. An analysis from 1992 noted a steady decrease in sperm counts and quality since the 1940s.

In a 2014 Nature paper, Ralston described this awkward process — trogocytosis, or “cell nibbling.” It was a revelation at the ...

Scientists have revealed how a parasite that affects millions of people every year evades our immune defenses.

If you’ve handled cat litter or eaten raw meat or unwashed produce, there’s a chance you might have a permanent toxoplasmosis ...

“You could see little parts of the human cell being broken off,” Ralston said of her very first encounter with the parasite. In 2014, she published her initial findings in Nature on the process, known ...

Infectious diseases such as gonorrhea or chlamydia are often overlooked factors that affect fertility in men. Accumulating ...

Toxoplasma gondii, a parasite spread by cats, can shred human sperm and may be an overlooked factor in declining male ...

Mindy Weisberger's new book details the crafty worms, fungi, and other parasites that have learned to mind-control their ...

Entamoeba histolytica is a single-cell parasite that causes intestinal disease, but sometimes invades the body, attacking cells and creating ... and now proposes a strategy to learn how it attacks ...