What do we mean when we talk about making buildings greener? It sounds pretty straightforward, but there’s no shortage of systems and terms to navigate –  passive houses, net zero homes or LEED certified buildings, life cycle assessments, energy efficiency and water conservation. And although the technical elements of going green are incredibly important, our guest today suggests that the definition of a green building is personal and individualized. Matt Grace is a green building engineer and the managing Principal at Integral Group in Calgary.