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m that lto start thinking, can you just grow food from cells?de and once thegot into my head, it was really impossible to get it out. >> reporter: valeti d researching the idea of creating meat in a lab. he'd always been bothered by thm envital impacts of meat production, and also the fact that billions of animals are slaughtered for meat each year. >> it really started dawning one hat all the pieces of what we needed to do existed in the world. and we had to put ither for this application of growing food. a reporter: valeti walkedy from his promising cardiology career and moved his family to the san francisco bay area to pursue the idea of creating what's known as "cell-based meat." in 2015, valeti launched memphis meats, one of the first private companies in the world focused on t technology. the next year, memphis meats debuted its first product. >> it tastes like a meatball. >> reporter: valeti's lab-grown meatballs take only a few weeks to produce. a beef cow, by comparison, takes around 18 months to get to market. valeti believes his fast-