By Naomi Haywood, Karen Davies and Lauren Souter Supporting young children’s learning from science objects: the importance of play on gallery By Lauren Ryall-Waite Review: Living with Machines By Abigail MacKinnon The BepiColombo ‘model’: looking beyond the ‘original’ By Elizabeth Bruton, Jeremy McCarthy and Dermot Turing Zygalski sheets: Polish codebreaking and the role of reconstruction in the Top Secret exhibition at the Science Museum By David H Lee Reports and commands: deciphering a health exhibition using the SPEAKING mnemonic By Imogen Holmes-Roe The Whitworth: a place for Industry and Art By Alexandra Rose Science and the City: Introduction By Ian Blatchford Lyon Playfair: chemist and commissioner, 1818–1858 By Sarah Wade Editorial By Manon Parry The valuable role of risky histories: exhibiting disability, race and reproduction in medical museums