The Office of Personnel Management handles retirement paperwork for the entire federal government out of an old limestone mine in Pennsylvania. The process is set to be overhauled by Elon Musk’s ...

The production process for cement requires grinding and heating limestone in industrial kilns at temperatures as high as 2,800° F. That creates “clinker,” which is the base element of most types of ...

Stanford geophysicist Tiziana Vanorio has developed Phlego, a volcanic rock-based cement formula that could reduce carbon emissions by 67%. It is inspired by the durable ancient Roman concrete and the ...