For decades, scientists have posed one interesting question about leeches—can they jump? While the idea of jumping leeches might sound like it's only the stuff of nightmares—I still can't forget those ...

For the first time in 40 years, scientists have discovered a new species of medicinal leech in North America in a Maryland swamp. A team of researchers made the discovery in 2015 and published their ...

The bite of a worm with several hundred teeth leaves a distinctive mark, as Victorian leech collectors knew well. Wading bare-legged through Britain’s bogs they enticed leeches to sell to doctors for ...

Many people are afraid of needles, and having a doctor take a blood sample from their arm makes them uncomfortable. There is an alternative: a prick to the fingertip or earlobe. But for many ...