It is often suggested that anyone who finds one of these invasive worms should kill it (carefully). Here's what else to know.

In a proof-of-concept lab experiment, scientists demonstrated that intestinal parasites could make and release therapeutic ...

Imagine finding a stray hair — then watching it slither away like a snake. Video of such a creature was shared this week on Facebook by the U.S. Fish and Wildlife Service, which identified the creepy ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The evolutionary trick of parasitic worm that sneakily burrows into the ...