Annually, international cement manufacturing releases greater than two and a half billion tonnes of CO₂ into the ambiance. This immense carbon footprint makes concrete one of many greatest hurdles within the transition to a low-carbon financial system. Now, researchers at Northwestern College have developed a know-how that would assist flip the tide: a carbon-negative constructing materials that not solely avoids emissions but in addition captures CO₂ from the air—whereas producing hydrogen as a beneficial by-product. The tactic, which mimics the shell-forming technique of molluscs, produces a brand new type of sand that would kind the muse for greener concrete.
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