Barnabas Calder is head of the History of Architecture Research Cluster at the University of Liverpool; it is the largest architectural history research grouping in the UK. His research focuses on the relationship between energy and human culture throughout history and British architecture since 1945. His book Architecture: From Prehistory to Climate Emergency (2021) was hailed as "one of the most significant architectural publications of recent years." His work appears in Encyclopaedia Britannica as part of a joint publishing agreement with the publisher of 1001 Buildings You Must See Before You Die, where the work originally appeared.