Cement is one of the most widely used industrial materials, essential in the construction of buildings and highways. The United Nations predicts that, by 2050, two-thirds of the world’s population will be gathered into cities, demanding more new buildings, more new roads, more cement? Yet, the manufacture of cement contributes up to 8% of carbon dioxide emissions worldwide. What is the solution, as we handle the increasing demand for new infrastructure? Is there an alternative? Learn more on NSF’s “The Discovery Files.”