Dylan Lamar from Green Hammer explains how design ideas are communicated in various different ways, from sketches drawn by hand to sophisticated computer models. He also shares the design process at Green Hammer, and how and why house plans evolve.

Sofie Pelsmakers, environmental architect and doctoral researcher at University College London (UCL), busts 10 common environmental design myths. This also serves as a good introduction to The Environmental Design Pocketbook.