This is a free preview of a paid episode. To hear more, visit www.louiseperry.co.ukStephen Shaw is the writer, director & producer of the documentary 'Birthgap - Childless World.' We spoke about why falling birth rates are (almost) an international phenomenon, why most childlessness is unplanned, and the role of the Pill in social norms that lead to falling fertility. In the extended version of the episode, we spoke about why mass imm…