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4d5e6f : I'd like to agree, but it's more than that. They talk about "radioactivity, discovered by Mme Curie". So you're right, it's a pun, between radioactivity (nuclear activity) and radio activity (radio tunes in the air).
4d5e6f : I'd like to agree, but it's more than that. They talk about "radioactivity, discovered by Mme Curie". So you're right, it's a pun, between radioactivity (nuclear activity) and radio activity (radio tunes in the air).