As part of a larger investment to create the new Vagelos Institute for Energy Science and Technology, the School of Arts and Sciences at the University of Pennsylvania seeks to add faculty to our newly formed Energy Cluster spanning the natural sciences. We invite applications for a tenure-track assistant professor position in one of the following departments: Biology, Chemistry, Earth and Environmental Science, or Physics & Astronomy. Exceptional senior candidates will also be given consideration. The successful candidate will mount an innovative program of fundamental scientific research that impacts our societal energy challenges, broadly defined, and in doing so will forge collaborative links with other Penn scientists and engineers involved in energy research. Applicants must apply online at http://facultysearches.provost.upenn.edu/postings/937 . Required application materials include: curriculum vitae with a list of publications, a research statement that includes the candidate’s perspective on how she or he fits into one of the four departments and identifies potential collaborative links with other natural science departments, and a teaching statement. Applicants should also submit the names and contact information for three individuals who will provide letters of recommendation. Review of applications will start on October 15, 2016 and will continue until the position is filled. The School of Arts and Sciences is strongly committed to Penn’s Action Plan for Faculty Diversity and Excellence and to establishing a more diverse faculty (for more information see: http://www.upenn.edu/almanac/volumes/v58/n02/diversityplan.html ). The University of Pennsylvania is an equal opportunity employer. Minorities/Women/Individuals with disabilities/Protected Veterans are encouraged to apply.