Evaluating dynamic lighting

Dynamic ‘circadian’ lighting varies in colour and intensity during the day, but does it improve alertness and help people sleep? BRE’s Paul Littlefair and Cosmin Ticleanu describe an experiment that aims to find out

Interview: new CIBSE President Stephen Lisk

The built environment is on the cusp of dramatic change, and CIBSE must be agile to keep up. Liza Young speaks to the Institution’s new President about the year ahead