When she returned to the National Museum of Natural History from a 2015 field expedition with several orange-spotted, olive-green leech specimens she had collected from a Maryland swamp ...

But leeches aren’t just useful at crime scenes. These creatures’ sanguineous appetites have also come in handy for scientists, who are hoping to use them to solve another mystery: the diversity of ...

He's bending over because it's hard to see approaching leeches. Their skin is a deep green-brown and the water is the color of dark tea and your feet stir up the mud. But don't worry, they can ...