Please post and distribute PhD GRADUATE STUDENT OPPORTUNITY IN CORAL AND SCLEROSPONGE BIOGEOCHEMISTRY AND PALEOCLIMATOLOGY PhD student sought for the study of stable isotopes or trace elements in coral reef skeletons or sclerosponges in a broad range of ongoing projects in Dr. Andrea Grottoli's research group in the Department of Earth and Environmental Science at the University of Pennsylvania (see <http://www.sas.upenn.edu/~grottoli>www.sas.upenn.edu/~grottoli for details, contact <mailto:[log in to unmask]>[log in to unmask]). Research involves a combination of tropical fieldwork and laboratory analyses. Four years of support will be offered. Desired qualifications: MSc in Biology or Geology or any other physical science, experience in biogeochemistry, fieldwork experience, and scuba certified. The position starts September 2004. Please complete applications online by December 15, 2003 at <http://www.sas.upenn.edu/earth/group.html>www.sas.upenn.edu/earth/group.html and indicate that you are interested in studying with Dr. Grottoli. The successful candidate must be accepted into the graduate program in the Department of Earth and Environmental Science at the University of Pennsylvania. The University of Pennsylvania is an equal opportunity/affirmative action employer.