Who is eternal, man or yeast?
https://www.smithsonianmag.com/smart-news/bread-was-made-using-4500-year-old-egyptian-yeast-180972842/?utm_source=smithsoniandaily&utm_medium=email&utm_campaign=20190808-daily-responsive&spMailingID=40384885&spUserID=OTE5NDcwNzM1NjY3S0&spJobID=1580748736&spReportId=MTU4MDc0ODczNgS2