In the 1900s radiation poisoning was relatively unknown, so manufactures painted dials with radioluminescent paint (containing radium) in order to make them glow in the dark. This video shows how radioactive a 1950s Timex watch still is.

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remembers being a young child watching the first astronauts walk on the Moon. Passionate about the importance of science education and understanding how science and technology impacts our society, he is still a sci-fi geek.