Anyone who owns a cat is familiar with the head-bumping way they greet you, but what does this behavior mean?
Have you ever wondered why pigs like to roll around in the mud? We'll solve the mystery for you on this A Moment Of Science.
As this watery sweat rinses your skin, it cools the body by evaporation--and even performs a community service by rinsing away potentially stinky bacteria!
Why do hands and feet sweat so much? How do hormones and the nervous system control the body's cooling system?
Did you know that earwax actually comes in different varieties? Learn more on this Moment of Science.