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 ...

A chance video by a grad student relishing her first big field trip might help resolve an argument that’s raged among biologists for more than a century. The question: Can leeches jump? Yes, at least ...