An Oakland-based company called Brimstone broke through that hurdle. On Wednesday, it announced it received third-party certification that its carbon-negative cement is structurally and chemically the same as regular cement. The company says it is the first carbon-neutral or carbon-negative cement to meet that building requirement. #engineering #sustainability #construction #GreenTechnology https://www.washingtonpost.com/climate-solutions/2023/07/13/green-concrete-cement-climate-brimstone/