Doctors took a look inside his nose and saw signs of blood. When they broke out the nasal endoscope, they saw the source of ...

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 ...

It's the beginning of the spooky season, which means ghouls, ghosts, and bloodsuckers abound. One of the most famous bloodsuckers in nature is, of course, the leech. These parasites feed on blood and ...

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 ...

A 437-million-year-old fossil from a deposit in Wisconsin could be the oldest species of leech ever found. By Jack Tamisiea If you look around Waukesha County in Wisconsin today, it can be difficult ...