Diets Worldwide are Increasingly Comprised of Major Globalized Crops (image) Burness Share Print E-Mail Caption This graph shows the relative contribution of major crops to the average food supply composition for calories (kcal/capita/day) worldwide, 1961 and 2009. Credit Source: Khoury et al. 2014. Proc. Natl. Acad. Sci. USA. Usage Restrictions Source: Khoury et al. 2014. Proc. Natl. Acad. Sci. USA. Share Print E-Mail 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.