Latest / The History of Germany: Kingdoms, War, and Rebuilding Europe — Fexingo History / Germany's Poison Gas: The Scientist Who Fought the First WMD
Transcript
- Lucas: So, Luna, we've covered a lot of ground in this series — from the Hanseatic League to the Berlin Airlift. But there's one figure who keeps popping up in modern history, and I think we need to talk about him properly: Fritz Haber. Luna: The chemist? I know his name is tied to both the Haber-Bosch process and poison gas. Quite a contrast. Lucas: Exactly. Haber is one of those figures who embodies the moral ambiguity of science. On one hand, his invention of the Haber-Bosch process in 1909 essentially allowed us to fix nitrogen from the air — which meant we could produce artificial fertilizer on an industrial scale. Without it, feeding the world's population would be nearly impossible. It's estimated that half the nitrogen in human bodies today comes from Haber-Bosch. Luna: So he's indirectly responsible for billions of lives. Lucas: Right. He won the Nobel Prize in Chemistry in 1918 for that work. But during World War I, Haber threw his genius into chemical weapons. He was a fervent German patriot — he converted from Judaism to Lutheranism, partly to prove his loyalty — and he believed that science could win the war. So he developed chlorine gas as a weapon. Lucas: The first major use was at Ypres on April 22, 1915. The Germans released chlorine gas from cylinders, and it drifted across French and Canadian trenches. Soldiers who inhaled it basically drowned in their own lungs. It was a terrifying, gruesome new kind of warfare. Luna: And Haber was there, supervising the attack, wasn't he? Lucas: He was. He personally went to the front to oversee the deployment. And when he came home, his wife Clara — herself a chemist, the first woman to earn a PhD from the University of Breslau — confronted him about it. She saw chemical warfare as a perversion of science. They had a terrible argument. That night, she took his service pistol and shot herself in the garden. Luna: That's devastating. And he left the next morning for the Eastern Front. Lucas: Yes. He didn't even attend her funeral. He was so consumed by his work. And that's the tragic irony — the man who saved billions through fertilizer also enabled mass murder. His institute, the Kaiser Wilhelm Institute for Physical Chemistry, became a hub for weapons research. Otto Hahn and Walther Nernst were colleagues there. Luna: I've heard that Zyklon B, used in the gas chambers, was developed from Haber's work. Lucas: That's true, but it's a bit indirect. Haber himself worked on pesticides and fumigants — in fact, he developed Zyklon B originally as a pesticide. Later, the Nazis adapted it for mass murder. Haber, ironically, was Jewish. He was forced to flee Germany in 1933, and he died in exile in 1934. So he never saw the Holocaust. Luna: But his legacy is still so tangled. Lucas: Completely. And that's what makes him such a compelling figure for historians. He's a reminder that science can be used for both immense good and immense evil, often by the same person. The Haber-Bosch process is considered one of the most important inventions of the 20th century, but his work on gas warfare also made him one of the most controversial. Luna: So how do we remember him today? Lucas: Uneasily. In Germany, there's been a debate about naming buildings after him. Some streets and institutes have been renamed. The Max Planck Society, which succeeded the Kaiser Wilhelm Society, has acknowledged his complex legacy. But ultimately, his story forces us to ask: can we separate the scientist from the science?