In India, producing surrogate babies is a booming business. Reproductive technology allows childless, wealthy couples to hire impoverished Indian women as surrogate mothers - pregnancy and childbirth have become commercial transactions. HARDtalk speaks to Dr Nayna Patel, a pioneer in the field. Her clinic has been recruiting surrogates and delivering babies to order for a decade. Is this 21st century way of making babies irresponsible and exploitative, or a positive public service?