We're revisiting a classic episode, about cheese! It's been around for more than 9,000 years. But how did humans learn to make it? And how did all the different types of cheese develop?
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
