Her research focuses on the geochemistry of microfossils and corals to determine rates and magnitude of climate change and forcing mechanisms behind recent climate change. Current research includes understanding the marine ecological implications of climate change, and the threat of ocean acidification. Tessa hosts CalTeach/MAST seminars to develop the climate change curriculum, and mentors CalTeach/MAST summer research students with support from an NSF CAREER award. For more information, see: https://hillbiogeochemistry.squarespace.com.﻿Charles Horn