Chestnut season in Europe could have been a thing 3,000 years ago

Europe's beloved chestnut season is coming to an end. That's calling attention to new research on chestnut pollen deposits, which suggests chestnut trees may date back to the rise and fall of the Roman Empire. Scientists now believe the Romans planted chestnut forests across the continent, though more for the lumber than the earthy chestnuts. Durrie Bouscaren reports from Istanbul.