In addition to examples of practice, editors Alison Boyle (Science Museum, London) and Johannes-Geert Hagmann (Deutsches Museum, Munich) have invited prominent historians and curators to reflect on the nature of recent scientific and technological heritage, and to challenge the role of museum collections in the twenty-first century. Challenging Collections will certainly be part of an ever-evolving dialogue among communities of collectors and scholars seeking to keep pace with the changing landscapes of science and technology, museology, and historiography.