The latest RIBA CPD theme focuses on the ‘bubble’ that surrounds us as we live, play and work indoors. It suggests that as the physical boundary between the conditioned and unconditioned environment of a building, the building envelope must keep its users safe while also addressing the practicalities of day-to-day living. Many of the manufacturers and service providers which these CPDs feature are industry leaders in providing that protection. It reminds us that many of their popular seminars are still available online. Below are a selection of other pre-spring observations.