Sure, the pasta is pretty good, but researchers at the University of California, Berkeley, had another reason to travel recently to Italy. In a quest to make concrete more durable and sustainable, an international team of geologists and engineers has found inspiration in the ancient Romans, whose massive concrete structures have withstood the elements for more than 2,000 years. Using the Advanced Light Source at Lawrence Berkeley National Laboratory (Berkeley Lab), a research team examined the fine-scale structure of Roman concrete. It described for the first time how the extraordinarily stable compound – calcium-aluminum-silicate-hydrate (C-A-S-H) – binds the material used to build some of the most enduring structures in Western civilization.