The average rate of multiple births is around 1% on a global scale, but there are many exceptions. Linha Sao Pedro, a small village in Brazil, reaches an abnormal 10%, enough to give rise to conspiracy theories, based on assumed experiments performed by the Nazis… Kodinji and Mohammadpur Umri, in India, have a 4,5% rate, more or less the same of Igbo-Ora, Nigeria, which gained the epithet of “home of twins”, with a welcome billboard as celebration…