People

Vivien Cumming

Former Research Associate, Harvard University

Viv is a photographer, filmmaker and writer specialising in documenting Earth science stories and expeditions. After postdocs at McGill and Harvard, Viv moved into science communication and now works with top scientists from around the world to make their...

Renata Cummins

Former Undergraduate Thesis Student

Switched coasts and is working in the Bay Area, CA

Corinne Engber

cengber@fas.harvard.edu

Research Group Administrator

She/Her/Hers

Julien Foriel

julien_foriel@fas.harvard.edu

Research Scientist

He/Him/His I am an isotope geochemist, and like all isotope geochemists, I like to build and tinker with instruments, develop new analytical methods and new isotopic tools to understand elemental cycles on Earth. I am particularly interested in the...

Ben Gill

Former Post-doctoral Fellow

Now on the faculty at Virginia Tech.

Maddie Goldberg

madisongoldberg@college.harvard.edu

Undergraduate Research Assistant

I’m a junior studying Earth and Planetary Sciences with a secondary in Educational Studies. I joined the Johnston group in the spring of 2019 as an undergraduate research assistant and am now beginning my senior thesis with the lab, conducting isotope...

Maya Gomes

mayagomes@fas.harvard.edu

Former Post-doctoral Fellow

Now on faculty at Johns Hopkins UniversityMaya is interested in how the cycling of elements through the ocean and atmosphere regulates climate and habitability. Specifically, she focuses on how the sulfur cycle interacts with the carbon, oxygen, and...

Ana Gonzalez Valdes

gonzalezvaldes@g.harvard.edu

5th Year Ph.D Student

Ana Gonzalez Valdes received her B.A. in Earth Sciences from Columbia University in 2016. At Columbia and Caltech she worked to understand how microbes in unique environments cycle nutrients like phosphorus and sulfur. At Harvard Ana will be spanning the...

Kalina Grabb

kalinagrabb@college.harvard.edu

Undergraduate Thesis Student

Karina was an undergraduate joint concentrator in Earth and Planetary Science and Environmental Engineering who has been working with the Johnston Group since her sophomore year. Her interests in biogeochemistry carries across sulfur, oxygen, and nitrogen...

Claire Hayhow

chayhow@mit.edu

Visiting Scholar

person

Jordan Hemingway

jordon.hemingway@erdw.ethz.ch

Assistant Professor/ETH Zurich

He/Him/His I'm interested in connections between the geologic and biospheric carbon cycles. Specifically, my work aims to understand how processes occurring in river basins transfer carbon between these two cycles in order to regulate atmospheric CO2...

Eve-Lyn Hinckley

Eve.Hinckley@Colorado.edu

Visiting Professor

Eve-Lyn Hinckley’s research focuses on studying the elements that underlie all life on Earth, with an emphasis on how they are changed by human activities and how those changes feed back to affect human welfare. Dr. Hinckley earned her Ph.D. in Geological...