Concrete production represents 4-8% of all worldwide CO2 production. It's a significant percentage. There's talk on sequestering CO2 in concrete itself but I'm

Concrete production represents 4-8% of all worldwide CO2 production. It's a significant percentage. There's talk on sequestering CO2 in concrete itself but I'm not sure how far it has gotten. I do remember some plants in France or Germany having facilities to process clinker byproducts. I wonder how more efficient is that.