The International Institute of Applied Systems Analysis (IIASA) offers an extraordinary opportunity for PhD candidates to spend a summer in a beautiful setting outside Vienna, Austria conducting cutting-edge, global policy-relevant research in its Young Scientists Summer Program (YSSP). 50 international doctoral students are selected each year to be mentored by IIASA scientists, providing both individual and multi-disciplinary research experience. The National Academies has a limited number of fellowships to support travel and living expenses for successful YSSP applicants who are U.S. citizens or are enrolled in U.S. graduate programs.