fingernails
What are fingernails made out of? Believe it or not, that armor plating at the tips of your fingers is made of the same stuff as your hair and skin, a protein called keratin. It's also in the hooves and horns of animals
Posts
Were do boogers come from?
Snot is sticky for a reason it collects all the crud that gets up your nose. One's snot reaches the nostrils, it dries into crumbly little boogers for easy disposal. Polite people blow them into tissues everyone else engages in rhinotillexis, the technical term for nose picking.
facts
Why do I have eyelashes? These fine hairs are our eye's first line of defense, shielding them from dust and dirt.