Earthworms swallow soil, extract nutrients from it, then excrete the rest up onto the surface.
Unless you've experienced problems with your liver, you may not appreciate the many important responsibilities of this pretty extraordinary organ.
What is stomach bile and where does it come into your body's digestive process?
It would probably make a pretty cheesy horror movie, but the thing is, it's true. In fact, that creature with the extra brain is you.
Want to know how to reduce pickiness in your child's diet? Find out on this Moment of Science.
If you thought birds were amazing before, wait until you hear what they put their bodies through in order to migrate.