The outstanding benefits of concrete have been appreciated for thousands of years, with the first official record of its use as a building material dating all the way back to the 6,500 BC in the United Arab Emirates. In fact, some of the structures erected hundreds - if not thousands of years ago - like Rome’s renowned Colosseum, which was built with travertine limestone, volcanic rock, and brick-faced concrete - are still standing, as a testament to concrete’s unmatched durability. But the material that paved the way for modern civilization is also a big contributor of greenhouse gas emissions globally, and the importance of decreasing that impact has now become one of the most important goals for the industry.