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David Johnston is a Professor in the Department of Earth and Planetary Sciences at Harvard University. He specializes in isotopic measurements to unlock the mysteries of Earth’s past and present. After earning a Bachelor of Science in Environmental Studies and Philosophy from Bates College in 2002, he obtained his Ph.D. in Geology from the University of Maryland, College Park in 2007. At Maryland, he worked on developing novel stable isotope systems under the guidance of James Farquhar. Following his doctorate, Johnston was a Fellow at the Harvard Microbial Sciences Institute from 2007 to 2009, where he focused on integrating field geology with redox geochemistry in collaboration with Andy Knoll, and microbial physiology with Pete Girguis. He joined the faculty of the Department of Earth and Planetary Sciences at Harvard in 2009 and was promoted to Full Professor in 2016. Johnston's research group dives into the fascinating intersection of geology and microbiology, often reflecting on the joys of scientific exploration.
Harvard University • Cambridge, MA
Joined the faculty and later became Full Professor, focusing on isotopic measurements and microbial interactions.
Administered by the Harvard Kenneth C. Griffin Graduate School of Arts and Sciences (GSAS).