Raphael D. Sagarin, Duke University (IMAGE) Duke University Caption This is Rafe Sagarin who is an ecologist in the Nicholas School of the Environment at Duke University, and co-editor of "Natural Security: A Darwinian Approach to a Dangerous World." Credit Duke University Usage Restrictions Please credit Duke University 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.