Food shock map (IMAGE) Penn State Caption Shock magnitudes in U.S. cities due to a 100-year food supply shock event. Shock magnitudes are expressed as a fraction of the average annual food inflows to each city. Darker red colors mean that the city is likely to experience greater food supply decreases. Credit Michael Gomez, Penn State Usage Restrictions non commercial use only 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.