Passive House Buildings has chosen to focus this issue on the increasing importance of embodied carbon in the building sector. As buildings become more energy efficient, the contribution of a building’s embodied carbon to its overall emissions grows. The ambitious projects featured in this fall issue showcase the tactics needed to cut these emissions, including choosing materials that sequester carbon and minimizing waste through prefabrication. And in further efforts to streamline deep energy retrofits, check out the two new initiatives aimed at industrializing retrofits.