Researchers are innovating with concrete to extend its lifespan, reduce emissions during production and benefit the environment. With about 70% of the global population living in concrete structures, this material is crucial for construction but contributes more than 8% of carbon emissions. One area of focus is "smart concrete," which includes cement-based sensors for detecting unseen cracks and sustainable alternatives that cut fossil fuel use in cement production, a field being advanced by experts like UNSW Sydney's Scientia Associate Professor, WENGUI LI.