Introduction Construction can never be completed without concrete. Whether a building, an educational institution or any other structure is involved, concrete will always be present because of its strength, durability and low cost. However, have you ever thought about the environmental impact that the production process involves? Ordinary Portland Cement (OPC) forms the largest proportion of concrete. OPC manufacturing causes the release of a great amount of carbon dioxide (CO₂) in the atmosphere. About 7–8% of the CO₂ in the world emanates from cement manufacturing. Given that one of the greatest challenges being faced today is climate change, research and engineering are exploring more sustainable ways of handling the challenge. Carbon-Negative Concrete, on the other hand, is one of the latest sustainable innovations of constructing structures. Unlike ordinary concrete, carbon-negative concrete reduces but absorbs carbon in its manufacturing process. Why Do We Need Carbon-Negat...