The Museum Environment Revisited is a valuable text that helps the reader understand collection care fundamentals and the preservation environment, as well as storage issues and decision-making. Presenting contributions from a range of experts working in heritage fields, this reimagining of Thomson’s seminal text explains the principles and techniques involved in controlling GLAM environments to minimise and mitigate agents of deterioration, including light, relative humidity and air pollution. Describing data collection and analysis techniques, the book points towards methods of remediation, with reference to international standards and ethics. It also contains important new content, including a chapter on integrated pest management and material about dust, conservation heating, film production lighting as well as sustainable architecture and engineering lighting. It also demonstrates how sustainability policies and risk management have been incorporated into organisational practice in recent years. The Museum Environment Revisited will inform thinking about developing and maintaining appropriate collection preservation environments. It will be essential reading for students, conservation and heritage professionals as well as volunteers working in GLAM and other heritage organisations.