Concrete is the most widely used man-made material in existence. It is second only to water as the most-consumed resource on the planet. But, while cement — the key ingredient in concrete — has shaped much of our built environment, it also has a massive carbon footprint. From a report: Cement is the source of about 8% of the world’s carbon dioxide (CO2) emissions, according to think tank Chatham House. If the cement industry were a country, it would be the third largest emitter in the world — behind China and the US. It contributes more CO2 than aviation fuel (2.5%) and is not far behind the global agriculture business (12%). Cement industry leaders were in Poland for the UN’s climate change conference — COP24 — to discuss ways of meeting the requirements of the Paris Agreement on climate change. To do this, annual emissions from cement will need to fall by at least 16% by 2030.
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Source:: Slashdot