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Tinnitus, or ringing in the ears, often...

Our various secretions - from tears to earwax - can tell us more about our bodies than you might think!

Our various secretions - from tears to earwax - can tell us more about our bodies than you might think!

Artists are notorious for pouring their heart and soul into their work, but historically, they also put some of their literal body parts into it as well!

It's another round of Hank facing off against one of the VidCon elite—this time, Executive Vice President Colin Hickey. Will Colin's surprise expertise help him dominate?

You can probably tell someone the purpose of most of your body parts. But what about earwax? Or your appendix? If you’re looking for those answers, or wondering why you have a butt, pop a squat to find out about weird human attributes.

Have you ever put your finger in your ear and wondered what that waxy stuff is? Join Jessi and Squeaks as they talk about ear wax!

No Judging: At one point you've probably put a finger in your ear and dug out some rather unsightly ear wax, but why does your body produce this yellowy substance in the first place?

Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by means of the Hardy-Weinberg equation.

Hank and his brother John discuss heredity via the gross example of relative ear wax moistness.

Wireless earphones that fit inside the ear are more convenient to use and therefore get left in the ear for longer, which can cause damage to the ear.

This video explores five fun facts about ears.