PhD Positions in Earth System Science Applications are invited for PhD assistantships within the Graduate School of Geography at Clark University. Assistantships cover tuition, provide an annual stipend, and include eligibility for a competitive fellowship. Clark's Earth System Science program features expertise in terrestrial ecosystems and global change, hydrology, forest ecology, Arctic System Science, remote sensing of land cover and change, disturbance and landscape ecology, human dimensions, and GISci. For complete details see http://www.clarku.edu/departments/geography/graduate/apply.cfm , or contact Brenda Nikas-Hayes, bnikasha...@clarku.edu , 508-793-7337. Applicants are encouraged to communicate with prospective advisors.