The Stone Age Food Pyramid Included Flour Made From Wild Grains

Humans didn't begin major agriculture until about 10,000 years ago. But 20,000 years before that they were grinding their own flour, a new study (in press) suggests, adding more proof that our forebears were eating the beginnings of a more balanced diet while still roving as hunter-gatherers. Anna Revedin's team says in today's Proceedings of the National Academy of Sciences that they found traces evidence of flour still stuck in 30,000-year-old stones the team found in Russia, Italy, and the Czech Republic.