Life's Little Mysteries answers fascinating questions about the world around you and the stuff in it, from things in the news and on your mind to crazy questions you didn't even know you had.
Pink eye, also known as conjunctivitis, develops when the transparent membrane, or conjunctiva, lining the eyelid and the white part of the eyeball gets inflamed. You can get pink eye from someone else if their bacterial or viral infection passes to you.
Most studies measuring the rate of hair growth haven't taken into account the race of study participants. A 2005 study found a difference among races in the rate of hair growth. Asian hair grows the fastest, while African hair grows the slowest.