Chart 1 (Dots) (IMAGE) Burness Caption A study of the world¹s countries finds that over the last 50 years, diets have become ever more similar. This chart shows each country's food supply composition in contribution to calories in 1961, 1985, and 2009. Credit <b>Source:</b> Khoury et al. 2014. <em>Proc. Natl. Acad. Sci.</em> USA. Usage Restrictions None License Licensed 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.