In this Perspective segment we're focusing on surrogacy. Our guests are David-Jean and Philippe Thareaut-Vigny, who became fathers to twin girls last year. Although a family today, the process took more than five years and was emotionally and financially demanding. Surrogacy raises difficult social, legal and moral issues around the world, such as whether the practice reduces a woman's body to a commodity. The couple travelled to the US to find a surrogate as the practice is illegal in France.