Gulf of Mexico Oxygen-deficient zone (IMAGE) Boston College Caption A satellite image of the Northern Gulf of Mexico, where “dead zones” caused by Mississippi River nutrient input can reach the size of New Jersey. Credit NASA Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.