The oldest leech ever discovered has turned out to be a shape shifter of expectations, preserving a body plan that looks nothing like the streamlined bloodsuckers that haunt horror movies and hospital ...

WALKER, Minn. — Minnesota's third-largest lake has a namesake only an angler could love: the leech. Earthworm's ugly aquatic cousin. Those slimy, crawly creatures straight out of a horror film. But ...