A backpacker from Scotland recently found that the cause of her frequent nosebleeds was a 3-inch-long (7.5 centimeters) leech living inside her nose. Subscribe to read this story ad-free Get unlimited ...

Receive emails about upcoming NOVA programs and related content, as well as featured reporting about current events through a science lens. Mark Siddall: Dear Inge, Yes. Stay very very still. They are ...

As we tidy away the Dracula capes and glow-in-the-dark plastic fangs for another winter, one notorious blood sucker has had a particularly good year. In Ireland, the leech was driven to extinction in ...

Smithsonian Curator Anna Phillips is on a quest to make leeches less repulsive to the public. Erin I. Garcia de Jesus Smithsonian Curator Anna Phillips wants people to be less scared of blood-sucking ...