Analysis of 3.6K-year-old cheese reveals spread of kefir bacteria from China's Xinjiang region
(Newser) -
In the 1990s, archaeologists peered into the graves of 3,600-year-old mummies in a desert in northwest China's Xinjiang region and found a strange substance smeared on their heads and necks. It turned out to be the oldest cheese ever found, and it's taught researchers quite a bit...