It has become a social media sensation and even led to a run on glue sales. We're talking slime — and not the green liquid Nickelodeon famously dumps on celebrities. And for many young people on ...

Once you’ve seen a slime mold—its gooey, delicately branching structure oozing in a vaguely unsettling way along a log or leaf—you’re unlikely to forget it. They’re unmistakable because there’s ...