Students receive guidance on the effective oral and written communication of research results. Students prepare and present a seminar, a poster, and a written thesis describing their research in Earth System Science. Prerequisites: successful completion of two quarters of Earth System Science 199 or comparable research experience with consent of instructor; successful completion of the lower-division writing requirement. Intended for seniors majoring in Earth and Environmental Sciences. Earth System Science 198 and H198 may not both be taken for credit.