Rutgers coffee rust (IMAGE) Rutgers University Caption Coffee is one of the most widely traded agricultural commodities in the world, supporting the livelihoods of about 100 million people globally, especially in low income countries. Credit Zack Guido Usage Restrictions Credit: Zack Guido 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.