Scientific American Content | Global Follow How a 1,900-year-old latrine helps explain why Roman concrete lasts An ancient sample shows calcite threading through the material’s cracks and pores, with possible lessons for making modern concrete last longer https://www.scientificamerican.com/article/how-a-1-900-year-old-latrine-helps-explain-why-roman-concrete-lasts/ scientificamerican.com
