Massey Burke is the executive director of the California Straw Building Association, the natural materials specialist for Verdant Structural Engineers, a cofounder of Verdant Structural Products, and a natural materials design/build consultant in the San Francisco Bay Area.  She began as a hands-on a practitioner two decades ago, and currently works on research, design, and implementation of biobased, low-carbon building techniques, with a specific interest in supply chains and bringing biobased building materials into the urban fabric.  She helps clients, architects, and contractors design for and manage construction with natural materials, and she partners with organizations including Arup and the Carbon Leadership Forum to generate technical information and help remove barriers to scaling up natural, carbon sequestering building methods.