Sure it's everywhere and there's a more-than-90-percent chance you eat it once a month. But we'll bet you don't know the full history of that pizza (or tomato pie) you're about to chow down on. Join Chuck and Josh as they explain it to you, bite by bite.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices
