The Worldwide Trade Risk Network for Nonfuel Minerals (image) International Institute for Applied Systems Analysis Share Print E-Mail Caption Trade networks of platinum, lithium, and copper. Credit Klimek et. al. (2015). Usage Restrictions Citation: P. Klimek, M. Obersteiner, S. Thurner, Systemic trade risk of critical resources. Sci. Adv. e1500522 (2015). 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.