Immerwahr grew up in
Swarthmore, Pennsylvania. He is Jewish and is first cousin twice removed of the pioneering chemist
Clara Immerwahr (1870-1915), first wife of Nobel Prize winner
Fritz Haber. He received his undergraduate degree from
Columbia University in 2002, before obtaining a second undergraduate degree at
King's College, Cambridge in 2004 as a
Marshall Scholar. In 2011, Immerwahr received a Ph.D. in history from the
University of California, Berkeley. From 2011-2012, he was a postdoctoral research fellow at
Columbia University's Committee on Global Thought. == Career ==