Either on Catholic Answers or Relevant Radio or ? I heard about this book about myths that are still taught in school even though they’ve been proven wrong.
Something like “10 Falsehoods Still Taught in School” or “12 Myths Still Taught in School”.
I think one of them was about the moths on trees during the industrial revolution and how they had evolved to where they weren’t white but where gray because it blended in better with the soot on the trees. Turns out the moth was planted there and colored. Something like that.