Lynsey Hanley is the author of 'Estate: An intimate History' and 'Respectable: the experience of class'. She is a regular contributor to the Guardian and the Times Literary Supplement.

Helen Pearson is a science journalist and editor for the international science journal Nature. She has been writing for Nature since 2001 and her stories have won accolades including the 2010 Wistar Institute Science Journalism Award and two best feature awards from the Association of British Science Writers. Based in London, she has a PhD in genetics and spent eight of her years with Nature in New York.