Cheese lovers beware: the days of Camembert could be numbered. According to France's National Centre for Scientific Research (CNRS), a lack of microbial diversity risks driving the famed French soft cheese to the brink of extinction. Researchers say a single mould strain known as Penicillium camemberti, which is essential for the production of camembert, is now unable to reproduce. This has led to a collapse in its genetic make-up, threatening its survival and that of the iconic cheese along with it. The Down to Earth team reports from France's Normandy region, the home of Camembert.