The first time I was bitten by a leech, I was swimming in a West Virginia river. I remember the scene perfectly: I crawled out to dry off and tried to wipe the mud off my knees, but the leech wouldn’t ...

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 ...