Earthworms may be good for your garden, but they can be harmful to other habitats.
Want worms without paying for them? Try worm grunting!
Earthworms swallow soil, extract nutrients from it, then excrete the rest up onto the surface.
For some people, the word "worm" means "money".
Ever wonder why worms stay burrowed in the ground until a rain finally comes? Find out on this Moment of Science.