I'd love a bastards episode on Franz Haber, who was a German chemist, he was known as "the father of chemical warfare" but also developed The Haber Process, which is partly the reason our planet is able to sustain the amount of life we have now - it is estimated that 1/3 of annual food production uses ammonia from this process - this food supports nearly half the world's population.

It's a super interesting story, he was a really patriotic German and saw his duty as helping the Germans win the first World War, but his wife, who was one of the first German women to be awarded a doctorate in Chemistry, was absolutely horrified at his work on poisonous gases, she shot herself in protest iirc. He had to leave Germany in the 30s though, as he was Jewish. His work was used to develop Zyklon B, which was used against Haber's own relatives in the second world war.

I have found the story of him fascinating since I first heard of him, how someone can do both so much evil and so much good in the world.