An innovative concrete mix that is more environmentally friendly and economical than convention mixes is being used in the Phoenix area, thanks in part to Barzin Mobasher, a professor in the School of Sustainable Engineering and the Built Environment, part of the Fulton Schools. Mobasher has overseen use of the advanced fiber-reinforced concrete in the expansion of the Valley Metro light rail line. The new material is bolstering the sustainability of the rail system’s infrastructure, improving cost efficiency and reducing time needed for the labor to boost the system’s resiliency. Research led by Mobasher has also helped to reduce emission of greenhouse gases in the production of cement for the new form of concrete.