In the 1960s and 1970s, he was known in Germany as a popular science spokesperson and wrote magazine columns and numerous books and presented his own TV programs like Professor Haber experimentiert, Das Mathematische Kabinett, Unser blauer Planet, Stirbt unser blauer Planet?, Professor Haber berichtet, and WAS IST WAS mit Professor Haber. He was founding editor of the German science magazine Bild der Wissenschaft from 1964 to 1990. His memorable experiments included one where the onset of a nuclear chain reaction was simulated with hundreds of mousetraps, each one having been loaded with two ping pong balls.In Walt Disney's film Our Friend the Atom, Haber is the science presenter (see ). While explaining a chain reaction, the camera travels over a field of mousetraps, all ready to close and throw two ping pong balls in the process (see a resume in ).
