(BBC) – The US couple, aged 37 and 38, ardently believe that the world needs to have more babies or risk civilisational collapse. They have become the poster children for pronatalism, a movement that believes falling birth rates are a big problem for society. And that big families are the answer.

For the last five years, they have spread the word about their goal by opening up their home for interviews and photoshoots. They claim to have used special technology, during the IVF process, to screen their embryos for traits such as intelligence. (Read More)