Biographical timeline of German chemist Fritz Haber, whose ammonia synthesis revolutionized agriculture but whose involvement in chemical warfare during WWI and the Zyklon B controversy cast a complex legacy.
Fritz Haber is born in Breslau, Prussia (now Wrocław, Poland), to a Jewish family. His father is a dye merchant. #history #chemistry
Haber enrolls at the University of Berlin to study chemistry under August Wilhelm von Hofmann. #education #chemistry
Haber earns his PhD in organic chemistry with a dissertation on decomposition products of indigo. #chemistry #academia
Haber converts from Judaism to Lutheranism, likely to advance his academic career. #religion #career
Haber takes a position at the Karlsruhe Institute of Technology, beginning his research on thermodynamics and electrochemistry. #chemistry #research
Haber publishes 'Grundriss der technischen Elektrochemie' (Outline of Technical Electrochemistry), establishing his expertise. #chemistry #publication
Haber is promoted to associate professor at the Karlsruhe Institute of Technology. #academia #chemistry
Haber marries Clara Immerwahr, a chemist and the first woman to earn a PhD at the University of Breslau. #marriage #chemistry
Fritz and Clara's son Hermann is born. #family
Haber's influential book on thermodynamics lays groundwork for the Haber process. #chemistry #thermodynamics
Haber and his assistant Robert Le Rossignol start experimenting with high-pressure ammonia synthesis using an osmium catalyst. #chemistry #invention
Haber files a patent for the synthesis of ammonia from nitrogen and hydrogen under high pressure. Carl Bosch later scales it up. #chemistry #patent
Haber becomes the founding director of the Kaiser Wilhelm Institute for Physical Chemistry and Electrochemistry in Berlin-Dahlem. #career #research
BASF constructs the first industrial-scale ammonia plant in Oppau, Germany, using the Haber-Bosch process. #industry #chemistry
With the outbreak of WWI, Haber puts his institute at the service of the German military. #war #history
Haber's team develops effective gas masks to protect German soldiers from chemical weapons. #war #technology
Haber oversees the first large-scale chlorine gas attack near Ypres, Belgium, marking the beginning of chemical warfare. #war #chemicalweapons
Haber's wife Clara, a pacifist, shoots herself after a heated argument over his role in gas warfare. #tragedy #family
Haber is promoted to captain and continues to direct chemical weapons research. #war #military
Haber marries Charlotte Nathan, a secretary at his institute. #marriage
Haber's institute develops Zyklon A, a cyanide-based pesticide precursor to Zyklon B. #chemicals #pesticide
WWI ends; Haber fears prosecution as a war criminal but is protected by Friedrich Ebert. #war #history
Haber receives the 1918 Nobel Prize in Chemistry for the Haber-Bosch process, despite controversy over his war work. #award #chemistry
Haber initiates a project to extract gold from seawater to help pay Germany's war reparations, but it fails. #science #failure
Haber's institute grows, focusing on physical chemistry and electrochemistry. #research #development
Haber and Charlotte divorce after six years. #personal #divorce
Haber is elected a member of the prestigious Leopoldina academy. #honor #science
Haber receives the Bunsen Medal for his work on ammonia synthesis. #award #chemistry
The Nazi rise to power begins; Haber, despite his conversion, is targeted due to his Jewish ancestry. #politics #history
The Nazi law forces non-Aryan civil servants to retire; Haber is required to dismiss his Jewish staff. #discrimination #politics
Haber resigns in protest of the dismissal of his Jewish colleagues. #protest #career
Haber leaves Germany and accepts an invitation from William Henry Bragg to work at the University of Cambridge. #exile #science
Haber has a severe heart attack while in England, his health declining. #health #illness
Fritz Haber dies of heart failure in Basel, Switzerland, while en route to Palestine. #death #biography
A memorial is established at the Hebrew University of Jerusalem, recognizing his contributions. #legacy #honor
Haber is buried in the Hörnli Cemetery in Basel. #death #legacy
Haber's connection to Zyklon B, used in Nazi gas chambers, becomes a subject of ethical debate. #ethics #history
The Max Planck Society renames the Fritz Haber Institute to avoid association with his wartime work. #legacy #rename
Daniel Charles's biography 'The Holiest of Wars' examines Haber's life and the moral dilemmas he faced. #biography #literature
The dual-use nature of the Haber-Bosch process continues to be discussed in the context of global food production and chemical warfare. #science #ethics