They’re small, sneaky, and likely to make you sick. From viruses, to bacteria, to pesky protozoa, here are the latest findings on the parasites that live among (and on, and in) the creatures of the Earth.
Studying the sex life of flies might sound silly, but two researchers who did just that have saved the livestock industry billions of dollars.
People who are infected with a common parasite found in cat litter may face a higher risk of having uncontrollable bouts of rage.
Why did the chicken cross the road? Opinions vary, but new evidence suggests that she likely picked up a few hitchhikers along the way.
The Roman Empire is famous for its advanced sanitation — public baths and toilets — but human poop from the region shows that it was rife with parasites.
Tiny, cocooned parasitic wasp larvae hop their way to safety, jumping to get away from predators and to find cooler, shady areas, a new study finds.
A Colombian man's lung tumors turned out to have an extremely unusual cause: The rapidly growing masses weren't actually made of human cells, but were from a tapeworm living inside him.
From tissue-munching bacteria to brain-eating amoebas, there are a number of things that can literally eat you alive.
One of the deadliest parasites in the world, the ameba Entamoeba histolytica, could be treated by targeting the human genes that allow the parasite to cause disease, researchers say.
When former U.S. President Jimmy Carter announced earlier this month that he had melanoma, he also took the opportunity to slam another health issue: the Guinea worm.