Hadza Women Securing Food (IMAGE) Duke University Caption A group of Hadza women use tools to dig out high-calorie tubers, that they will then roast and share with their group. Credit Herman Pontzer, Duke University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.