Q. You often write about bizarre plants and animals. A few years ago, you wrote about some kind of odd invasive flatworm that eats earthworms. What was it, and is it dangerous to humans? If we find ...

Scientists hiking a forest trail in Chile found a “giant” flatworm eating an invasive species in a first-of-its-kind sighting, a study said. Screengrab from Walk the South’s YouTube video While ...