Holly Samuelson, an assistant professor of architecture at the Graduate School of Design (GSD); Pamela Cabrera, a GSD graduate now working as a climate engineer and associate at Transsolar KlimaEngineering; and Sara Tepfer, a doctor of design student at GSD; will discuss research, funded in part by the Joint Center for Housing Studies, that combines state-of-the-art hygrothermal simulations and mold-growth computations with data on predicted weather changes in several cool-climate US cities.