The main difference between hair and fur is where it grows, not what it's made of.
Wild horses don't need horseshoes, but domesticated horses travel paved surfaces that wear down their hoofs at an uncomfortable rate.
Want a new ’do? Your hair follicles are formidable foes.
Fingernails. They're good for scratching, biting, clipping, and polishing. But what are they, in fact?
There are some important differences between horns and antlers.
It turns out, tears are more essential than might have thought. This Moment of Science looks at the chemistry of tears.
Split ends are a common enough hair complaint, but do you know what precisely is splitting, and how, and why? In order to answer these questions and more, a quick hair anatomy lesson. Learn more on this Moment of Science.