We already knew that fermentation has been very important in human history, but it seems that fermentation has been around for longer than we thought. A new archaeological site in Sweden has revealed a cache of over 200,000 fish bones from more than nine thousand years ago. The fish bones show evidence of having been fermented, a common way to preserve food. The researchers say that this evidence of fermentation show that settlement in Scandinavia occurred much earlier than previously thought.
You can read about it here: http://www.upi.com/Science_News/2016/02/08/9200-year-old-fish-fermentation-site-found-in-Sweden/2971454953234/?st_rec=7951464786265