b'THE DEPARTMENT OF TERRESTRIAL MAGNETISM Carnegie InvestigatorsEarth/Planetary Science Research Staff MembersCONEL M. OD. ALEXANDER and Astronomy ALAN P. BOSS R. PAUL BUTLER Front row (left to right): Wan Kim, Kevin Johnson, Richard Carlson, Steven Golden, Lara WagnerRICHARD W. CARLSON, Director (and Winston her dog), Janice Dunlap, Hlne Le Mvel, Quintin Miller. First row standing: ShaunJOHN E. CHAMBERSHardy, Roberto Molar Candanosa, Fouad Tera, Scott Sheppard, Mary Horan, Adriana Kuehnel,PETER E. DRISCOLLSusana Mysen, Alycia Weinberger, Sanni Turunen (visiting student from University of Helsinki,JOHN A. GRAHAM, Emeritus Finland), Merri Wolf, Parvin Zahedivash, Conel Alexander, Larry Nittler, Peter van Keken. SecondERIK H. HAURI row standing: John Chambers, Brian Schleigh, Gary Bors, Paul Butler, Steve Shirey, Alan Boss,HLNE LE MVEL 75Tim Mock. Third row standing on the ledge: Cian Wilson, Emily Cahoon (visiting Ph.D. studentALAN T. LINDE, Emeritus from Portland State University), Jianhua Wang, Jaehan Bae, Sharon Xuesong Wang, MeredithLARRY R. NITTLER MacGregor, Jonathan Tucker, Doug Hemingway, Elodie Brothelande, Asaf Gelber (GeochemicalDIANA C. ROMANSociety), Kathleen McKee, Jessica Arnold, Anas Bardyn, Maximilien Verdier-Paoletti, Kei Shimizu,I. SELWYN SACKS, EmeritusMegan Newcombe, Helen Janiszewski, Tim Jones, Peter Driscoll, Diana Roman. SCOTT S. SHEPPARD STEVEN B. SHIREY Merle A. Tuve Senior Fellow SEAN C. SOLOMON, Director EmeritusMICHAEL R. PERFIT, Distinguished Professor of Geology, Department of Geological Sciences,FOUAD TERA, EmeritusUniversity of Florida, Gainesville 1 PETER E. VAN KEKEN MORRIS PODOLAK, Professor of Planetary Sciences, Tel Aviv University 2 LARA S. WAGNERALBRECHT W. HOFMANN, Emeritus Director, Max Planck Institute for Chemistry; Adjunct ProfessorALYCIA J. WEINBERGER at Lamont-Doherty Earth Observatory and the University of Nanjing 31 From October 3, 2017, to November 24, 2017 2 From January 1, 2018, to March 1, 2018 3 From May 15, 2018, to June 9, 20181From February 1, 20172On leave of absence3From January 25, 2017, To March 10, 2017'