Our brand new issue features the stunning new London passive house of legendary engineer Max Fordham, a radical Dublin retrofit scheme that has transformed the lives of its elderly residents, and an in-depth guide to the ever-more-important topic of overheating in buildings. It also includes more inspiring passive house case studies, a special report on how heat pumps perform in home retrofits, plus news, opinion, analysis, and great photography of some of the most exciting passive buildings from around the world.