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, biogeography, Arctic System Science, remote sensing of land cover change, landscape ecology, human dimensions, and GISci. To apply, send a completed application form and personal statement, three letters of reference, and official transcript(s) with a $50 (application fee). For complete details see: http://www.clarku.edu/departments/geography/phdapphow.cfm, or contact Brenda Nikas-Hayes, bnikasha...@clarku.edu, 508-793-7337. Applicants are encouraged to communicate with prospective advisors.