Parasites have been likened to "ecological dark matter"—an unseen force vital for sustaining life on earth as we know it, supporting ecosystems that are more diverse, more resilient, and more ...

In the fall of 1985, Scott L. Gardner found himself standing over his toilet bowl, fishing around in the squishy output of his empty bowels with a chopstick. He had recently returned to graduate ...

In Southern California, a quiet but widespread public health risk has taken root in the region’s freshwater fishing spots. Researchers from Scripps Institution of Oceanography at UC San Diego ...

Parasites burrowed into a Texas woman’s eye, causing her to go blind — and it’s because she went swimming in contact lenses.

More than 90% of popular freshwater fish in Southern California are carrying human-infecting parasites, researchers say. This poses a significant danger for those who like to eat freshly caught ...

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

The human fingerprint on global warming was likely evident in Earth’s atmosphere far earlier than previously thought—even before the invention of modern cars, a new study says.

Research into parasites has long focused on species that pose a threat to human health or are of economic importance. Arctic char is the fish species with the most known parasites in Northern Canada.

Does a parasite cleanse actually work? Find out more about these detoxes, their side effects, and safety considerations.

The parasites’ rapid death could be a consequence of the importance of iron transport in many processes, Sigala says. “Blocking [this protein] is expected to impair not just one or two key processes ...

With parasites, we could learn which threatened species are keeping ecosystems ever-so-gently in balance, or which ones might be future human-killers. We also might not.

Parasites have been likened to “ecological dark matter” – an unseen force vital for sustaining life on earth as we know it, supporting ecosystems that are more diverse, more resilient, and ...