Environmental scientist developing new green building materials. Dr. Stone is the founder of Iron Shell Material Technologies and the inventor of Ferrock and Polymiron. He studied environmental iron chemistry at the University of Arizona and it was there that he made the initial discovery of Ferrock in 2006, which was subsequently patented. Since then he has focused on practical applications of the Iron Carbonation Process for multiple benefits including carbon capture and solid waste recycling as well as product manufacture. As part of this effort, he spent 8 years doing field trials using Ferrock on the Tohono O'odham Nation funded by multi-year grants from the EPA, USDA, and NSF (totaling nearly $800,000). Since then he has invented another iron-based, carbon-negative material called Polymiron and has expanded the range of applications for these composites beyond construction. This includes utilizing the hydrogen and fuel gas by-products of the curing reactions for energy conversion systems. He now is focused full time on commercializing these green material technologies through the Iron Shell venture.