[madsbuch]

My guess is that the coal could come from wood? The heat could definitely come from nuclear power.

However, the processing of the limestone might be more difficult. But then again, that also seems like insignificant emissions when the other ones are taken out, no?

[eppp]

Making cement without baking the limestone, which itself releases carbon plus the burning of gas to make the heat, is possible and is being piloted now. We just lack the will to mandate these changes.