Why do we have ear wax? Why does it build up and what can it tell us about ourselves? Enter the mysterious ear canal in this sticky new episode of Stuff to Blow Your Mind.
Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htm
And to learn about your ad choices when listening to podcasts, visit
https://www.howstuffworks.com/privacy.htm#ad-choices
