Animated version of Fritz Kahn's 1926 "human machine" illustration

Fritz Kahn was a German physician and writer. In 1926 he created Der Mensch als Industriepalast ('Man as Industrial Palace'), an iconic illustration of the human body as a kind of industrial chemical plant.  German animator Henning M Lederer did a fantastic job turning Kahn's illustration into a 3-minute animated video (with slightly gross sound effects).
[via Aeon]