Larry Strain is a founding Principal at Siegel & Strain Architects. He has spoken on materials, sustainability and embodied carbon at conferences throughout the country. He serves on the AIA Materials Knowledge Working group and the boards of the Ecological Building Network and the Carbon Leadership Forum. Publications: ReSourceful Specifications – early guideline specification for green materials, White Paper – Time Value of Carbon; Rebuild – chapter in the New Carbon Architecture and the Total Carbon Study (co-author). For the last decade he has focused on reducing the total carbon footprint of buildings, and on building reuse.