https://www.gps.caltech.edu/people/john-p-grotzinger?back_url=%2Fpeople%3Fcat_one%3Dmbb%26cat_two%3DAtmospheric%2BChemistry%26p%3D3
John P. Grotzinger - Division of Geological and Planetary Sciences
john p grotzingerplanetary sciencesdivisiongeological