John P. Grotzinger

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John P. Grotzinger is the Fletcher Jones Professor of Geology at California Institute of Technology and chair of the Division of Geological and Planetary Sciences.

His works primarily focus on chemical and physical interactions between life and the environment.

In addition to biogeological studies done on Earth, Grotzinger is also active in research into the geology of Mars and has made contributions to NASA's Mars Exploration Program. Provided by Wikipedia